$\"\"$

\

The expression is $\"\"$ .

\

Simplify the expression.

\

$\"\"$ (Distributive property: $\"\"$ )

\

$\"\"$ (Commutative property: $\"\"$ )

\

$\"\"$ (Distributive property: $\"\"$ )

\

$\"\"$ (Substitute: $\"\"$ and $\"\"$ )

\

Therefore, the simplified expression is $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

\

\