Question

https://gyazo.com/98206fdb1ef8b23d100fa33a208bf6dc

Answer 1

n=-1

(1/2)n-6=-7

(1/2)n-6+6=-7+6
(1/2)n=-1
2(1/2)n=-1(2)
n=-2
NO


-6n+8=-2

-6n+8-8=-2-8
-6n=-10
-6n/-6=-10/-6
n=5/3
NO


2(n-8)=-18

2n-16=-18
2n-16+16=-18+16
2n=-2
n=-1
YES


2n+12-3n=15
-n+12=15
-n=3
n=-3
NO

The answer is C, 2(n-8)=-16 :)

Answer 2

;) thanks