$\"\"$

The expression is $\"\"$ .

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

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

$\"\"$ (Apply commutative property of addition: $\"\"$ )

$\"\"$ (Apply additive inverse property: $\"\"$ )

$\"\"$ (Apply additive identity property: $\"\"$ ) $\"\"$

The simplified expression is $\"\"$ .