Answer :
-3|x + 7| = -12
|x + 7| = -12/-3 = 4
x + 7 = 4 and x + 7 = -4
x = 4 - 7 and x = -4 - 7
x = -3 and x = -11
|x + 7| = -12/-3 = 4
x + 7 = 4 and x + 7 = -4
x = 4 - 7 and x = -4 - 7
x = -3 and x = -11