The measure of an angle is 21° more than twice its supplement. Find the measure of each angle

So supplement angles are angles that add up to 180 so

so x=180-y

it's kind of hard to represent the problem but this is my way (which is basically trial and error and math stuff (confusing) and uses luck)

so

x=21+2y

x+y=180

so since the above equations are true then

((180-21) / 3) = 53 = supplement=53

angle=127

supplement=53

trial and error and accient

127=21+2 (53)

127=21+106

127=127