Answer:
30⁰
Step-by-step explanation:
The two angles are equal since the lines are parallel, so you set the two equations equal to each other and solve.
2x+20 = 3x-10
subtract 2x from both sides
20 = x-10
add 10 to both sides
30 = x
check your answer but plugging 30 into the original equations, and you get 80⁰ for both.
