$\"\"$ $\"\"$

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The Perimeter of rectangle is $\"\"$ .

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According to subtraction property of equality: If a = b then a – c = b - c.

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$\"\"$ (Subtract 2w from each side)

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$\"\"$ (Additive inverse property: $\"\"$ )

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$\"\"$ (Additive inverse property: $\"\"$ )

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$\"\"$ (Divide each side by 2)

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$\"\"$ (Cancel common terms)

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$\"\"$

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$\"\"$ \

$\"\"$ (Substitute $\"\"$ )

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$\"\"$ (Multiply: 2(30) =60)

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

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$\"\"$ (Divide: $\"\"$ ) $\"\"$

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Width $\"\"$ m

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