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

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The equation is $\"\"$ .

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Subtraction property of equality: If a=b then $\"\"$ .

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$\"\"$ (Subtract 8r from each side)

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$\"\"$ (Commutative propertyof addition: $\"\"$ )

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

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

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$\"\"$

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$\"\"$ (Multiply each side by negative one) \ \

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$\"\"$ (Distributive property: $\"\"$ )

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$\"\"$ (Product of two same signs is positive)

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$\"\"$ (Product of two different signs is negative)

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$\"\"$ (Commutative propertyof addition: $\"\"$ )

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$\"\"$

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$\"\"$ (Divide each side by 5)

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$\"\"$ (Cancel common terms)

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$\"\"$

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The value of $\"\"$ .

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