Question

What is the answer for |x|-7=8
A) x=1
B) x= 15
C)x= -1 or 1
D) x= -15 or 15

Answer 1

The answer is D. "x=-15 or 15."

You can solve this by adding seven on both sides.
|x|-7=8
+7 +7
------------
|x|=15

Therefore, x is either equal to 15 or -15.