you're finding the measurement of angle xwz, so as you already know the measurement of angle wxy and ywz, you simply have to add the measurements together and you'll get the answer 123° ^^ I hope this helped :)
Angle XWZ is the combination of both XWY and YWZ. We're given both of the angle measurements, so the sum of both of the angles will give us the answer. 84 + 29 = 123.
