$\"\"$

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The expression is $\"\"$ .

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

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Mixed fraction can be written as improper fraction.

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

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$\"\"$ (Product of two different signs is negative) $\"\"$

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Divide by a fraction, multiply by its multiplicative inverse.

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So, $\"\"$ , where $\"\"$ .

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$\"\"$ $\"\"$

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If $\"\"$ , where b,d,f $\"\"$ .

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$\"\"$

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$\"\"$ (Multiply numerator: $\"\"$ )

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$\"\"$ (Multiply denominator: $\"\"$ ) $\"\"$

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The simplest form is $\"\"$ .