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

The expression is $\"\"$ .

= $\"\"$ (Remove parentheses)

Apply commutative propertie of addition: a + b = b + a.

$\"\"$

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

$\"\"$

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

The simplified expression is $\"\"$ .