Question

an angle is 1/5 of its supplement. what is it magnitude

Answer 1

let the angle be x
x = 1/5 (x -180)
5x =180 -x
x =30
the mangitude of the angle is 30 degree

Answer 2

1/5x(180-x)=(180-x) /5=
5x=180-x
6x=180
x=30