# Relationship Equation Solution
1 Complimentary 60 + x -20 =90 x + 40 = 90
x = 50
2 Supplementary 156 + 4x = 180 156 + 4x = 180
4x = 180 - 156
4x = 24; x = 6
3. Vertically Opposite 2x + 40 = 120 You should be able to get x = 40
4 Supplementary x + 100 + 45 = 180 And again you should get x = 35