SOLUTION: In parallelogram DATE, m∠D = 8x - 20 and m∠A = 2x + 30. Find x.

SOLUTION: In parallelogram DATE, m∠D = 8x - 20 and m∠A = 2x + 30. Find x.

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Question 257267: In parallelogram DATE, m∠D = 8x - 20 and m∠A = 2x + 30. Find x.
Answer by drk(1908) (Show Source): You can put this solution on YOUR website!
In a parallelogram, 2 adjacent angles are supplementary, so, we get

combining like terms, we get

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