$\"\"$ $\"\"$ $\"\"$

The expression is $\"\"$ .

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

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

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

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

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

$\"\"$

Simplified expression is $\"\"$ .