$\"\"$

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The equation is $\"\"$ .

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Solve the equation.

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$\"\"$ (Original equation)

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$\"\"$ (Logarithm formula: $\"\"$ if and only if $\"\"$ )

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$\"\"$ (Definition of negative exponents: $\"\"$ )

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

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$\"\"$ (Power of a powers: $\"\"$ )

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Equality for exponential functions property: $\"\"$ if and only if $\"\"$ .

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$\"\"$

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

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$\"\"$ (Cancel common terms)

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$\"\"$

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The value of $\"\"$ is $\"\"$ .