Question

Find the value of x for which abcd MUST BE a parallelogram.

Answer 1

`\displaystyle 8 = x`

Step-by-step explanation:

DA and CB are parallel lines, therefore we set both expressions equal to each other:

3x - 5 = 2x + 3

- 3x - 3 - 3x - 3

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`\displaystyle -8 = -x \\ \\ 8 = x`

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Answer 2

x=8 if I did the math correctly..

Explanation:

2x + 3 = 3x - 5

add 5 to both sides, that = 8

Subtract 2 from both sides, that leaves you with x=8