Answer:
30 degrees
Step-by-step explanation:
We know that 2x + 50 and 5x - 80 both add up to 180 degrees because they are co-interior. so, lets simplify it:
2x + 50 + 5x - 80
= 7x - 30
7x - 30 = 180
7x = 210
x = 30 degrees
