$\"\"$

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The equation is given by $\"\"$

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

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

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$\"\"$ (Divide each side by 3)

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$\"\"$ (Simplify)

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

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The value of $\"\"$ .