Question 557358
supplementary = 180 degrees
larger = 3x - 20
smaller = x

3x - 20 + x = 180
4x - 20 = 180
4x = 180 + 20
4x = 200
4x/4 = 200/4
x = 50

smaller = 50 degrees
larger = 3(50) - 20 = 150 - 20 = 130 degrees