Question

An angle is is 60° less than three times its supplementary angle. Find the angle and its supplementary angle.​

Answer 1

Let the angle be X
And the other angle is 3x-60
X+3x-60=180
4x-60=180
4x=240
X=60
And the other angle is 120

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Answer 2

Step-by-step explanation:

let the angle be x

supplementary angle of x is 180-x

so.,

3(180-x)-60

x=540-3x-60

4x=480

x=480/4

x=120

120°and it's supplementary angle

180-120=60°