Let WZYZ be a trapezoid with bases XY andWZ. In this trapezoid,angle ZXW = 105,angle XWZ = 43 , and angle XYZ = 147. Find angle YXZ in degrees.
You need to check your question very carefully.
You have not labeled your trapezium (trapezoid to you) properly. It only has 3 letters.
And that makes me wonder if some of the other letters are incorrect as well.