Respuesta :

−3|2x + 6| = −12

−3(2x + 6) = −12
-6x - 18 = -12
       -6x = -12 +18
       -6x = 6
           x=-1

−3 [-(2x + 6)] = −12
−3 (-2x - 6) = −12
  6x +18 = -12
  6x = -12 -18
  6x = -30
     x=-5
answer: x= -5 and x = -1
texaschic101
-3 | 2x + 6 | = -12
| 2x + 6 | = -12/-3
| 2x + 6 | = 4

2x + 6 = 4             -(2x + 6) = 4
2x = 4 - 6              -2x - 6 = 4
2x = -2                   -2x = 4 + 6
x = -1                     -2x = 10
                               x = -5

solution is : x = -1 or x = -5