Question

the measure of the angle is four times greater than its supplement

Answer 1

144 degrees

Answer 2

Dont just give answers. Offer an explanation of the process.

Ok. So we know that an angle + its supplement is 180 degrees. Given that, this wont be too hard. Lets make the supplement x. Since the angle is 4 times as large as the supplement, we can call it 4x. So x + 4x = 180
5x = 180
x = 36
But we arent looking for x! We're looking for 4x. So 144

Answer 3

x = 4(180 - x)
x = 720 - 4x
5x = 720
x = 144