Answer:
56°
Explanation:
The angles are supplementary. They add up to 180°
So ∠AYZ + ∠AYX = 180
6x+4 + 3x - 4 = 180
9x = 180
x = 20
Measure of ∠AYX = 3x - 4 = 3 x 20 - 4 = 60 -4 = 56°
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