What is the value of x? Enter your answer in the box. x =

Answer:
[tex]x=\boxed{20}[/tex]
Step-by-step explanation:
The vertical angles have the same measure, so ...
3x +50 = 6x -10
60 = 3x . . . . . add 10-3x
20 = x . . . . . . divide by 3