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Answer:
x = 37
<A = 65
<B = 78
Explanation:
Interior angles of a triangle sum = 180
so
x + 2x + 4 + 2x - 9 = 180
5x - 5 = 180
5x = 185
<A = 2(37) - 9 = 65
<B = 2(37) + 4 = 78
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