$\"\"$

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Step1:

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a)

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The equation is $\"\"$ .

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Solve the equation and simplify.

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$\"\"$

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The value of $\"\"$

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b)

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The equation is $\"\"$ .

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Logarithemic property: $\"\"$ .

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Simplify the equation.

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$\"\"$

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Solution:

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a) $\"\"$

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b) $\"\"$