Question

E essa:

-7(-x+1)+2(x+2)=4(x+3) ?

Answer 1

7x - 7 + 2x + 4 = 4x + 12
7x + 2x - 4x = 12 + 7 - 4
9x - 4x = 19 - 4
       5x = 15
         x = 15/5
         x = 3

Answer 2

+7X-7+2X+4=4X+12 7X+2X-4X=12+7-4. 5X=15 X=15/5 X=3