Answer:
x=15
Step-by-step explanation:
Because these angles are opposite angles, they are equal to each other. Knowing this, we can set this equation and solve:
7x+17=8x+2
Subtract both sides by 17
7x+17-17=8x+2-17
7x=8x-15
Subtract both sides by 8x
7x-8x=-15
-x=-15
x=15
I hope this helps! Please comment if you have any questions :)