Question

The measure of the supplement of an angle is 20° more than three times the measure of the original angle. find the measures of the angles.

Answer 1

If the original angle is x degrees then its supplement is 180 - x degrees.

we have the equation:-

180 - x = 3x + 20

160 = 4x

x = 40

The original angle is 40 degrees and its supplement is 140 degrees