Question

-10x - 135 = 117 + 2x
A. 25
B. -18
C. -21
D. 22
Helps pls

Answer 1

C

Explanation:

Add 10x to both sides:

-10x - 135 = 117 + 2x

-10x - 135 + 10x = 117 + 2x + 10x

-135 = 117 + 12x

Subtract 117 from both sides:

-135 - 117 = 117 + 12x - 117

-252 = 12x

Divide both sides by 12:

`(-252)/(12) = (12x)/(12)`

-21 = x

So the answer is C.

Hope this helps!