Question

How do I solve this problem

Answer 1

x=7

Explanation:

13x-1 and the right angle are vertical angles, so they are equal

13x-1 = 90

Add 1 to each side

13x-1+1 =90+1

13x = 91

Divide by 13 on each side

13x/13 = 91/13

x = 7