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Find the value of x for which ABCD must be a parallelogram.
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Find the value of x for which ABCD must be a parallelogram.

Find the value of x for which ABCD must be a parallelogram.-example-1
User Raxit
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18 - 4x = 7x + 7 \\ 11 - 4x = 7x \\ 11 = 11x \\ x = 1
User Willy Wijaya
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