ABCD is a parallelogram. If side AB = 12x - 7, side BC = 5x + 7, and side CD = 7x + 18, find the value of x.
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Given:
The expression is
To find:
The value of the given expression when y=-5.
Solution:
We have,
Putting y=-5, we get
Therefore, the value of the given expression is 50 when y=-5.