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For what value of x must ABCD be a parallelogram?
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For what value of x must ABCD be a parallelogram?

For what value of x must ABCD be a parallelogram?-example-1
User Char
by
6.8k points

1 Answer

5 votes

Answer:

x = 3

Explanation:

to be a parallelogram opposite sides have to be equal

so we have


DC = AB\\\\20x-7 = 16x+5

now solve for x


20x-7+7 = 16x+5+7\\\\20x = 16x + 12\\\\20-16x = 16x+12-16x\\\\4x = 12\\\\x = (12)/(4) = 3

User Djalonso
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