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

\

The expression is $\"\"$ .

\

$\"\"$ (Remove parentheses)

\

Apply commutative property of addition: $\"\"$ .

\

$\"\"$

\

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

\

$\"\"$

\

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

\

The simplified expression is $\"\"$ .