Answer:
x = 20
Step-by-step explanation:
The angles are vertical angles and vertical angles are equal
3x+50 = 6x - 10
Subtract 3x from each side
3x+50 -3x = 6x-3x-10
50 = 3x-10
Add 10 to each side
50+10 = 3x-10+10
60 = 3x
Divide each side by 3
60/3=3x/3
20 =x