Answer:
x = 9
Step-by-step explanation:
Given information the pair of parallel lines are cut by a transversal.
A and B are alternate exterior angle so their measures are equal to each other.
We can write the following equation based on these informations:
m∠A = (4x − 2)° = m∠B = (6x − 20)° transfer like terms to the same side of the equation
20 - 2 = 6x - 4x subtract
18 = 2x divide both sides by 2
9 = x