It’s 30 because they are vertical angles which means both sides are congruent
Answer:
The answer is "
".
Step-by-step explanation:
Therefore in this question the "bh" were the multiplied and these values includes the variable which is solving by the isolating of "b".
Let's Divides the both sides for h.

The 63 is the err in her explanation here.
A. x = -6
6-x-x = 18
6-2x =18
-2x = 12
x = -6