( - 6 x - 6 ) /6 - ( 3 x + 4 ) /- 1 = - 2

( - 6 x - 6 ) /6 - ( - 18 x - 24 ) /6 =  - 12/6

- 6 x - 6 + 18 x + 24  = - 12

12 x = - 12 + 6 - 24

12 x = - 30

x = -  2.5

bjr

comme (-6x-6) = 6 (-x-1)

on aura

6 (-x-1) / 6 + 3x + 4 = -2

soit

-x - 1 + 3x + 4 = - 2

2x = -2 - 3

2x = -5

x = -5/2