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

The expression is $\"\"$

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

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

Combine like items using commutative property of addition.

$\"\"$

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

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

The simplified expression is $\"\"$ .