Question

∠E and ∠F are vertical angles with m∠E=5x+10 and m∠F=7x−12 . What is the value of x? Enter your answer in the box.

Answer 1

5x+10=7x-12.... 24=12x.......2=x

Answer 2

Vertical angles are congruent, so E=F

5x+10=7x-12
10=2x-12
22=2x
11=x