Question

Find the value of x that makes A || B.

Answer 1

x=15

Explanation:

angle 2 and angle 4 are same side interior angles. same side interior angles are supplementary angles or angles that add up to 180°

2x+10+4x+80=180

6x+90=180

-90 -90

6x=90

6x/6=90/6

x=15

hopefully this helps :)