$\"\"$

The expression is $\"\"$ .

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

$\"\"$ (The product of two different signs is negative) $\"\"$

Mixed fraction can be written as improper fraction.

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

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

$\"\"$

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

The product is $\"\"$ .