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

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The equation is $\"\"$

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Subtraction property of equality: if $\"\"$ , then $\"\"$

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$\"\"$ (Subtract 7 from each side)

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$\"\"$ (Commutative property: $\"\"$ )

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

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

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$\"\"$

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

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$\"\"$ (Divide each side by 8)

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$\"\"$ (Cancel common terms) \ \

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$\"\"$

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Check:

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To check the solution, substitute $\"\"$ in equation $\"\"$ .

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$\"\"$

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

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

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The equation is true.

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$\"\"$

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The value of $\"\"$ .

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