Answer:

Step-by-step explanation:
Take out 8m as a factor from the top side of the equation. You are left with 
I think it would be 12(2-3)
Hope this helps!
6 3/4=6*4+3/4=24+3/4=27/4
z/12=27/4
4z=27*12
4z=324
z=81
The answer would be A. -18x^7
hope this helps:)
C. is the answer because -159 is a rational number