$\"\"$

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The equation is $\"\"$ and $\"\"$ .

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Solve the equation $\"\"$ .

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$\"\"$ (Second equation)

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

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$\"\"$ (Cancel common terms)

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Find the value $\"\"$ in terms of $\"\"$ .

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$\"\"$ (First equation)

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

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$\"\"$ (Multiply)

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

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$\"\"$ (Cancel common terms)

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$\"\"$ (Simplify)

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Therefore, the value of $\"\"$ is $\"\"$ .

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$\"\"$

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$\"\"$ .