Answer:
angle XYW = -20x + 155
Step-by-step explanation:
angle XYZ = 150
angle WYZ = 20x - 5
angle XYW = y
angle XYZ = 20x - 5 + y
150 = 20x - 5 + y
150 + 5 = 20x + y
y = -20x + 155
So angle XYW = -20x + 155
