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

The expression is $\"\"$ .

$\"\"$ (Remove parentheses)

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

$\"\"$

$\"\"$ (Apply Additive inverse property: $\"\"$ )

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

$\"\"$ (Additive identity property: $\"\"$ ) $\"\"$

The simplified expression is $\"\"$ .