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

The expression is $\"\"$ .

Rearrange and group like terms using commutative property of addition: $\"\"$ .

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

Combine like terms using distributive property: $\"\"$ .

$\"\"$

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

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

The simplified expression is $\"\"$ .