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

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The equation is $\"\"$

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$\"\"$ (Distribute $\"\"$ )

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

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$\"\"$ (Multiply both sides by 12)

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$\"\"$ (Cancel common terms)

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$\"\"$ (Divide: $\"\"$ ) $\"\"$ Combine like terms using distributive property: $\"\"$ .

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

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

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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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$\"\"$ (Distributive property of addition: a (b +c) = ab + ac)

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

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

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$\"\"$ (Cancel common terms)

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

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Compare the values, the equation is true.

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$\"\"$

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The solution is $\"\"$ .

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