Your answer will be -3 only
Isolate z by itself:

To simplify variables with powers, subtract the smaller power from the bigger power:


The exponent will be
-3.
Replace n with 12.
9 + 12 / 3 - 6
Simplify.
21 / -3 = -7
Hope this helps!
Answer:
I think its x not = 4 because that would make the denominator = 0 after the multiplication. (g x h = 2x - 8 / x - 4
Step-by-step explanation: