If 2x+3y+z=55,x-y=4 and y - x + z=12,then what are the values of x , y and z?	Choose the correct choice from the following options.
A) 7,11,8
B) 5,8,9
C) 4,2,5
D) 3,9,8
E) None of them
The given equations are:   2x+3y+z=55 …(i); x + z - y=4 …(ii); y -x + z =12 …(iii)   Subtracting (ii) from (i), we get: x+4y=51 …(iv)   Subtracting (iii) from (i), we get: 3x+2y=43 …(v)   Multiplying (v) by 2 and subtracting (iv) from it, we get: 5x=35 or x=7.   Putting x=7 in (iv), we get: 4y=44 or y=11.   Putting x=7,y=11 in (i), we get: z=8   7,11,8nswer is 7,11,8.
<result>A</result>
If 2x+3y+z=55,x-y=4 and y - x + z=12,then what are the values of x , y and z?