Respuesta :

Answer:

x = 4 or x = -12

Step-by-step explanation:

|3x + 12| = 24

3x + 12 = 24 or -(3x + 12) = 24

       3x = 12 or -3x - 12 = 24

           x = 4 or -3x = 36

           x = 4 or x = -12