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

The expression is $\"\"$ .

$\"\"$ (Remove parentheses)

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

$\"\"$

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

$\"\"$

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

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

The simplified expression is $\"\"$ .