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

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The equation is, $\"\"$

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

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

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$\"\"$ (Subtract 7p from both sides)

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$\"\"$ (Apply Commutative proparty: $\"\"$ )

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$\"\"$ (Apply Additive inverse proparty: $\"\"$ )

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

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$\"\"$ (Subtract 12 from both sides)

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$\"\"$ (Apply Commutative proparty: $\"\"$ )

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$\"\"$ (Apply Additive inverse proparty: $\"\"$ )

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

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

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$\"\"$ (Cancel common factors)

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

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$\"\"$

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$\"\"$

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Check:

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

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$\"\"$

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

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

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

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Compare the values, the equation is true. The solution is, $\"\"$ .

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$\"\"$

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The solution is $\"\"$ .

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