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Solve the angles of this parallelogram

Solve the angles of this parallelogram-example-1
User Andriy Gordiychuk
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6x + 2 + 14x + 2y + 15y + 10 + 6x + 12y = 360° \\ 26x + 29y + 12 = 360° \\ 26x + 29y = 360 - 12 \\ 26x + 29y = 348 \\ 26x + y = (348)/(29) \\ 26x + y = 12 \\ x + y = 312

User StaticVoidMan
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