$\"\"$

The expression is $\"\"$ .

Mixed fractions can be written as improper fractions.

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

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

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

$\"\"$

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

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

$\"\"$ (Divide: $\"\"$ ) $\"\"$

The simplest form is $\"\"$ .