Solve for x please! worth 25 points

Answer:
x = 20
Step-by-step explanation:
Using the vertical angle theorem, you will find that 7x - 99 = 2x + 1.
7x - 99 = 2x + 1
+99 both sides
7x = 2x + 100
-2x both sides
5x = 100
÷5 both sides
x = 20
The answer is x = 20.