$\"\"$

The expression is, $\"\"$

$\"\"$ (Multiply and Substitute $\"\"$ )

$\"\"$ (Subtract and Substitute $\"\"$ ) \ \

$\"\"$ (Multiplicative identity property: $\"\"$ )

$\"\"$ (Multiplicative inverse property: $\"\"$ )

$\"\"$ (Add and substitute $\"\"$ )

$\"\"$

The value of the expression is $\"\"$