Respuesta :

Answer:

A) x= -9

B) x=5

C) x=5

D) x=5

Step-by-step explanation:
the first one, if you plug in 5 to the others, they come out even. A does not.

12 + 3(5) = -15
12 + 15 = -15
27 = -15
0 = -42

this is incorrect, making A your answer.
hope this helps!