Question

Find the value of x for which the lines a and b are parallel. answer : 23 20 2 19

Answer 1

x=19

Explanation:

These two angles are alternate interior angles and alternate interior angles are equal when the lines are parallel

148 = 7x+15

Subtract 15 from each side

148-15 =7x+15-15

133 = 7x

Divide by 7

133/7 = 7x/7

19 =x