Answer:
angle 1 = 120
Explanation:
5x-5
x=25
5x=125
125-5=120
angle 1 = 120
you can check this by figuring out the second angle:
2x+10
x=25
2x=50
50+10=60
120+60=180 we know that all angles on a straight line add up to 180, so we know they are both correct