16+90+2y =180 since it is a straight line
106 +2y = 180
subtract 106 from each side
2y = 74
divide by 2 on each side
y=37
90+2y+O = 180 since it is a straight line
90 + 2(37) +O = 180
90+74 +O = 180
164+0 =180
subtract 164 from each side
O = 16
O +4x+90=180 sine it is a straight line
16 + 4x +90 = 180
106 +4x = 180
subtract 106 from each side
4x = 74
divide by 4
x=18.5