$\"\"$

The expression is $\"\"$

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

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

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

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

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

$\"\"$ (Add: $\"\"$ ) $\"\"$

The simplified expression is $\"\"$ .