If $4$ sides of a quadrilateral are $3.5 x - 4 y + 7 x, 4.25 x - 9.5 y + 8, 11.5 y - 7 x, 3.75 x + 9 y - 11 x$ ,then its perimeter is ?

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Solution

perimeter of quadrilateral = sum of all the 4 sides of quadrilateral.

$3.5 x - 4 y + 7 x$

$+ 4.25 x - 9.5 y + 8$

$+ 11.5 y - 7 x$

$+ 3.75 x + 9 y - 11 x$

$= 0.5 x + 7 y + 8$

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