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\"\"\"\"\"\"

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The given Perimeter(P) of rectangle is \"\".

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where l=length, w=wedth.

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Apply to subtraction property of equality: Subtract 2w from each side.

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\"\"

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\"\"                              (Apply additive inverse property: \"\")

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\"\"                                    (Apply additive inverse property: \"\")\"\"

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Apply to division property of equality: Divide each side by2.

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\"\"

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\"\"                                    (Cancel common terms)

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\"\"

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\"\"

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\"\"                               (Substitute : \"\")

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\"\"                                   (Multiply: \"\")

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\"\"                                           (Subtract: \"\")

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\"\" cm                                      (Divide:\"\")\"\"

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Length \"\"cm.

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\