Answer:
x=20, Angles are 70° and 110°
Step-by-step explanation:
Angles are supplementary, so their sum is 180°
5x-30+x+90 = 180
6x+60 = 180
6x = 180-60
6x = 120
x = 20
5x-30 = 5*20 - 30 = 100 -30 = 70°
x+90 = 20 + 90 = 110°
