$\"\"$

\

The expression is $\"\"$ .

\

Group powers with the same base.

\

$\"\"$

\

Apply quotient of powers property: $\"\"$ .

\

$\"\"$

\

$\"\"$

\

Apply negative exponent properties: $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

The value of $\"\"$ .