$\"\"$

\

The equation is $\"\"$ .

\

Apply product of powers formula: $\"\"$ .

\

$\"\"$

\

Apply formula: if $\"\"$ then m = n.

\

$\"\"$

\

Subtract 7 from each side.

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ \ \ Divide each side by 3.

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

The value of $\"\"$ .