In a rectangle adjacent sides measures $x + 2$ and $2 x - 3$ and perimeter $= 40$ units. Find $x$ .

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Solution

We know that the perimeter of rectangular
$= 2 (l + b)$

Therefore,
$2 (x + 2 + 2 x - 3) = 40$
$3 x - 1 = 20$
$3 x = 21$
$x = 7$

Hence, this is the answer.

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