Question

How do I solve this

Answer 1

x=11

Explanation:

85 + 3x + 12= 11x+9

97 +3x= 11x+9

-97 -97

3x= 11x - 88

-11x -11x

-8x = -88

/-8 /-8

x=11

Answer 2

Explanation:

exterior angle is the sum of two opposite interior angle

11x+9=3x+12+85

11x-3x=88

8x=88

x=11.

hope this helps you.