$\"\"$

The expression is $\"\"$

$\"\"$ (Commutative property: $\"\"$ )

$\"\"$ (Distributive property: $\"\"$ )

$\"\"$ (Multiply: $\"\"$ ) $\"\"$ $\"\"$ (Commutative property: $\"\"$ )

$\"\"$ (Distributive property: $\"\"$ )

$\"\"$ (Subtract: $\"\"$ ) $\"\"$

The simplified expression is $\"\"$ .