Step-by-step explanation:
13x - 33 = 10x -------------- Corresponding angles
13x - 10x = 33
3x = 33
x = 33/3 = 11
angle 10x = 10(11) = 10 × 11 = 110
5y = 180 - 10x
5y = 180 - 10(11)
5y = 180 - 110
5y = 70
y = 70/5 = 14
