Question 110392
From the information given angles WXV and ZXY are opposite angles at the point of intersection X.
Hence these two angles are equal.
So 4s - 9 = 2s + 17
Add 9 to both sides:
4s = 2s + 26
Subtract 2s from both sides:
2s = 26
Divide both sides by 2:
s = 13 QED