Question

A) 3(2x-2)=2(3x+9) B) 3(4x+7)=4x-25 C) 7x+15=3(3x-7)

Answer 1

Resolvemos.

A )

3(2x - 2) = 2
6x - 6 = 2
6x = 8
  x = 4/3

B)

3(4x + 7) = 4x - 25
12x + 21 = 4x - 25
8x = - 46
  x = - 23/4

C)

 7x + 15 = 3(3x - 7)
7x + 15 = 9x - 21
36 = 2x
18 = x