Answer:
89
Step-by-step explanation:
They are corresponding angles, so they are congruent(equal)
Because they are equal, you do 10x-1=8x+17
Bring all your variables to one side, so you do 10x=8x+17+1, then put 8x next to 10x, so now you have 10x-8x=17+1
you get 2x=18, so now you divide and get x=9
you plug in 9 to all your equations for x
so you get 89 for the one on the top
and 89 for the other one
