$\"\"$

The expression is $\"\"$ .

$\"\"$ (Apply distributive property: $\"\"$ )

$\"\"$ (Multiply: $\"\"$ ) $\"\"$

$\"\"$ (Product of two different signs is negative)

$\"\"$ (Apply commutative property of addition: a + b = b + a)

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

The simplified expression is $\"\"$ .