Respuesta :
You are solving for x. Isolate the x. Note the equal sign, what you do to one side, you do to the other.
Add 4 to both sides
x - 4 (+4) = -8 (+4)
x = -8 + 4
Simplify. Combine like terms
x = (-8 + 4)
x = -4
-4 is your answer for x.
~
x - 4 = -8
+4 both sides
x - 4 + 4 = -8 + 4
-4 + 4 cancel each other out
x = -8 + 4
x = -4
The answer is x = -4.