Question

when 5 is subtracted from length and breadth of the rectangle the perimeter becomes 26. what is the mathematical form of the statement

Answer 1

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Suppose,
Length of rectangle is l,
breadth of rectangle is b,
As its clearly mentioned in the question 5 is subtracted from length and breadth of the rectangle, so,

L-5 AND B-5.
Perimeter is 26. (given)
$2(l - 5) + 2(b - 5) = 26$
$2l + 2b - 10 - 10 = 26$
$2l + 2b = 46$
$2(l + b) = 46$
$l + b = \frac{46}{2}$
$l + b = 23$

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