Relax

Respuesta :

cad311
divide both sides by the number in front of x
so
4x=-16
x=-4

12=-3x
x=-4

-21=7x
x=-3

6x=-30
x=-5

Answer:

a: x = -4, b : x = -4, c : x = -3, d : x = -5

Step-by-step explanation: