Question

an angle is 1/5 of its supplement than the measure of angle is?​

Answer 1

let angle be x

Other angle is x/5

x + x/5 =180

5x+x/5 = 180

5x+x=180×5

6x = 180×5

x=180×5/6

x=30×5

x=150

So, The supplement is 180-150 = 30º