Answer:
53
Step-by-step explanation:
86 = 2x - 20
+20 +20
106 = 2x
2 2
53 = x
x = 53
Those 2 are alternate interior angles. So that means they're the same
2x - 20 = 86 <-- Add 20 to the right side
2x = 106 <-- Divide by 2
