Answer:
x = 25
Step-by-step explanation:
Both angles are supplementary and will add up to 180°
5x - 5 + 2x + 10 = 180
collect like terms
5x + 2x +10 -5 = 180
7x + 5 = 180
7x = 180 - 5
7x = 175
x = 175/7
x=25
