Answer:
120 degrees
Step-by-step explanation:
Angles 1 and 3 are congruent, because they are vertical angles, so we must set them equal to each other, solve for x and plug in x.
Hope this helps :-)
3 = 108 degrees
2x + 80 = 3x + 60
get the variable and number on different sides
2x + 80 - 80 = 2x
3x + 60 - 3x = 60
2x + 3x = 5x
60 + 80 = 140
5x = 140
now divide each side by 5
5x / 5 = x
140 / 5 = 28
x = 28
28 + 80 = 108
