Find the value of x when the sum of 20x,(2x+15),(3x-12)and (12x+5) is 674?  Select the correct option.
A) 15 B) 12 C) 18 D) 20 E) 22
sum = 20x+(2x+15)+(3x-12)+(12x+5) = 37x+8   37x+8 = 674   x = 666/37= 
<gadget id="calculator">666/37</gadget>
<output>18</output>
18   Answer is 18
<result>C</result>
Find the value of x when the sum of 20x,(2x+15),(3x-12)and (12x+5) is 674?