Answer:
x=8
Step-by-step explanation:
The two angles are complementary angles, so they add together to make 90 degrees
x+50 + 4x = 90
Combine like terms
5x+50 = 90
Subtract 50 from each side
5x+50-50= 90-50
5x = 40
Divide by 5
5x/ 5 = 40/5
x = 8
