Answer:
x = 18
Step-by-step explanation:
Since they are vertical angles, the two angles must be congruent.
So, 3x + 20 = 5x - 16
Isolate x: 2x = 36
Divide: x = 18
These are vertical angles, this means that they are equal to each other. Set them equal to eachother and solve for x:
3x + 20 = 5x - 16
(3x - 3x) + 20 = (5x - 3x) - 16
20 + 16 = 2x + (- 16 + 16)
36/2 = 2x/2
Hope this helped!
