$\"\"$

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$\"\"$

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The equation is $\"\"$ \ \

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Apply multiplition property of equality: if $\"\"$

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$\"\"$ (Multiply each side by 7)

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$\"\"$ (Cancel common terms)

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

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$\"\"$ (Add 7 to each side)

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

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

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$\"\"$ (Add: $\"\"$ )

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

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Check:

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Substitutive the value $\"\"$ on original equation

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$\"\"$

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

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

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The equality is true. \ \ $\"\"$

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The solution $\"\"$

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