import java.util.*;
import java.util.Map.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        String str = sc.next();
        int a = Integer.parseInt(String.valueOf(str.charAt(0)));
        int b = Integer.parseInt(String.valueOf(str.charAt(1)));
        int c = Integer.parseInt(String.valueOf(str.charAt(2)));
        int d = Integer.parseInt(String.valueOf(str.charAt(3)));
        
        if (a + b + c + d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a + b + c - d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a + b - c + d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a + b - c - d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a - b + c + d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a - b + c - d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a - b - c + d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a - b - c - d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        
    }
} import java.util.*; util.* java import java.util.Map.*; Map.* java.util public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        String str = sc.next();
        int a = Integer.parseInt(String.valueOf(str.charAt(0)));
        int b = Integer.parseInt(String.valueOf(str.charAt(1)));
        int c = Integer.parseInt(String.valueOf(str.charAt(2)));
        int d = Integer.parseInt(String.valueOf(str.charAt(3)));
        
        if (a + b + c + d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a + b + c - d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a + b - c + d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a + b - c - d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a - b + c + d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a - b + c - d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a - b - c + d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a - b - c - d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        
    }
} Main public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        String str = sc.next();
        int a = Integer.parseInt(String.valueOf(str.charAt(0)));
        int b = Integer.parseInt(String.valueOf(str.charAt(1)));
        int c = Integer.parseInt(String.valueOf(str.charAt(2)));
        int d = Integer.parseInt(String.valueOf(str.charAt(3)));
        
        if (a + b + c + d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a + b + c - d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a + b - c + d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a + b - c - d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a - b + c + d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a - b + c - d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a - b - c + d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a - b - c - d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        
    } main {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        String str = sc.next();
        int a = Integer.parseInt(String.valueOf(str.charAt(0)));
        int b = Integer.parseInt(String.valueOf(str.charAt(1)));
        int c = Integer.parseInt(String.valueOf(str.charAt(2)));
        int d = Integer.parseInt(String.valueOf(str.charAt(3)));
        
        if (a + b + c + d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a + b + c - d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a + b - c + d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a + b - c - d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a - b + c + d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a - b + c - d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a - b - c + d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a - b - c - d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String str = sc.next(); str sc.next() sc.next sc int a = Integer.parseInt(String.valueOf(str.charAt(0))); a Integer.parseInt(String.valueOf(str.charAt(0))) Integer.parseInt Integer String.valueOf(str.charAt(0)) String.valueOf String str.charAt(0) str.charAt str 0 int b = Integer.parseInt(String.valueOf(str.charAt(1))); b Integer.parseInt(String.valueOf(str.charAt(1))) Integer.parseInt Integer String.valueOf(str.charAt(1)) String.valueOf String str.charAt(1) str.charAt str 1 int c = Integer.parseInt(String.valueOf(str.charAt(2))); c Integer.parseInt(String.valueOf(str.charAt(2))) Integer.parseInt Integer String.valueOf(str.charAt(2)) String.valueOf String str.charAt(2) str.charAt str 2 int d = Integer.parseInt(String.valueOf(str.charAt(3))); d Integer.parseInt(String.valueOf(str.charAt(3))) Integer.parseInt Integer String.valueOf(str.charAt(3)) String.valueOf String str.charAt(3) str.charAt str 3 if (a + b + c + d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;} a + b + c + d == 7 a + b + c + d c a + b + c + d a b c d 7 {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;} System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7") System.out.println System.out System System.out String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7" String.valueOf(d) "+" String.valueOf(c) "+" String.valueOf(b) String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7" String.valueOf(a) String.valueOf String a "+" String.valueOf(b) String.valueOf String b "+" String.valueOf(c) String.valueOf String c "+" String.valueOf(d) String.valueOf String d "=7" return; if (a + b + c - d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;} a + b + c - d == 7 a + b + c - d a + b + c a + b + c a b c d 7 {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;} System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7") System.out.println System.out System System.out String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7" String.valueOf(d) "-" String.valueOf(c) "+" String.valueOf(b) String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7" String.valueOf(a) String.valueOf String a "+" String.valueOf(b) String.valueOf String b "+" String.valueOf(c) String.valueOf String c "-" String.valueOf(d) String.valueOf String d "=7" return; if (a + b - c + d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;} a + b - c + d == 7 a + b - c + d a + b - c a + b a b c d 7 {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;} System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7") System.out.println System.out System System.out String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7" String.valueOf(d) "+" String.valueOf(c) "-" String.valueOf(b) String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7" String.valueOf(a) String.valueOf String a "+" String.valueOf(b) String.valueOf String b "-" String.valueOf(c) String.valueOf String c "+" String.valueOf(d) String.valueOf String d "=7" return; if (a + b - c - d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;} a + b - c - d == 7 a + b - c - d a + b - c - d a + b a b c d 7 {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;} System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7") System.out.println System.out System System.out String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7" String.valueOf(d) "-" String.valueOf(c) "-" String.valueOf(b) String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7" String.valueOf(a) String.valueOf String a "+" String.valueOf(b) String.valueOf String b "-" String.valueOf(c) String.valueOf String c "-" String.valueOf(d) String.valueOf String d "=7" return; if (a - b + c + d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;} a - b + c + d == 7 a - b + c + d a - b + c + d a - b a b c d 7 {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;} System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7") System.out.println System.out System System.out String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7" String.valueOf(d) "+" String.valueOf(c) "+" String.valueOf(b) String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7" String.valueOf(a) String.valueOf String a "-" String.valueOf(b) String.valueOf String b "+" String.valueOf(c) String.valueOf String c "+" String.valueOf(d) String.valueOf String d "=7" return; if (a - b + c - d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;} a - b + c - d == 7 a - b + c - d a - b + c a - b a b c d 7 {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;} System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7") System.out.println System.out System System.out String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7" String.valueOf(d) "-" String.valueOf(c) "+" String.valueOf(b) String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7" String.valueOf(a) String.valueOf String a "-" String.valueOf(b) String.valueOf String b "+" String.valueOf(c) String.valueOf String c "-" String.valueOf(d) String.valueOf String d "=7" return; if (a - b - c + d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;} a - b - c + d == 7 a - b - c + d a - b - c a - b - c a b c d 7 {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;} System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7") System.out.println System.out System System.out String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7" String.valueOf(d) "+" String.valueOf(c) "-" String.valueOf(b) String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7" String.valueOf(a) String.valueOf String a "-" String.valueOf(b) String.valueOf String b "-" String.valueOf(c) String.valueOf String c "+" String.valueOf(d) String.valueOf String d "=7" return; if (a - b - c - d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;} a - b - c - d == 7 a - b - c - d c a - b - c - d a b c d 7 {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;} System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7") System.out.println System.out System System.out String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7" String.valueOf(d) "-" String.valueOf(c) "-" String.valueOf(b) String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7" String.valueOf(a) String.valueOf String a "-" String.valueOf(b) String.valueOf String b "-" String.valueOf(c) String.valueOf String c "-" String.valueOf(d) String.valueOf String d "=7" return; String[] args args public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        String str = sc.next();
        int a = Integer.parseInt(String.valueOf(str.charAt(0)));
        int b = Integer.parseInt(String.valueOf(str.charAt(1)));
        int c = Integer.parseInt(String.valueOf(str.charAt(2)));
        int d = Integer.parseInt(String.valueOf(str.charAt(3)));
        
        if (a + b + c + d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a + b + c - d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a + b - c + d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a + b - c - d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a - b + c + d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a - b + c - d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a - b - c + d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a - b - c - d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        String str = sc.next();
        int a = Integer.parseInt(String.valueOf(str.charAt(0)));
        int b = Integer.parseInt(String.valueOf(str.charAt(1)));
        int c = Integer.parseInt(String.valueOf(str.charAt(2)));
        int d = Integer.parseInt(String.valueOf(str.charAt(3)));
        
        if (a + b + c + d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a + b + c - d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a + b - c + d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a + b - c - d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a - b + c + d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a - b + c - d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a - b - c + d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a - b - c - d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        
    }
} Main
import java.util.*;
import java.util.Map.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        String str = sc.next();
        int a = Integer.parseInt(String.valueOf(str.charAt(0)));
        int b = Integer.parseInt(String.valueOf(str.charAt(1)));
        int c = Integer.parseInt(String.valueOf(str.charAt(2)));
        int d = Integer.parseInt(String.valueOf(str.charAt(3)));
        
        if (a + b + c + d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a + b + c - d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a + b - c + d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a + b - c - d == 7) {System.out.println(String.valueOf(a) + "+" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a - b + c + d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a - b + c - d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "+" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        if (a - b - c + d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "+" + String.valueOf(d) + "=7"); return;}
        if (a - b - c - d == 7) {System.out.println(String.valueOf(a) + "-" + String.valueOf(b) + "-" + String.valueOf(c) + "-" + String.valueOf(d) + "=7"); return;}
        
    }
}
