$\"\"$

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The equation is $\"\"$

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Add 3 to each side.

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$\"\"$

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$\"\"$

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$\"\"$

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Subtract $\"\"$ from each side. \ \

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Multiply each side by 7.

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$\"\"$

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$\"\"$

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Divide each side by 2.

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$\"\"$

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$\"\"$

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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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$\"\"$

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$\"\"$

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$\"\"$

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Compare the values, the equation is true.

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$\"\"$

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The value of $\"\"$ .