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

\

The given equation is $\"\"$ .

\

Apply addition property of equality: Add 6x from each side.

\

$\"\"$

\

Rearrange the terms using commutative property of addition: $\"\"$ . $\"\"$

\

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

\

Apply to division property of equality: Divide each side by 15.

\

$\"\"$

\

$\"\"$

\

$\"\"$ (Cancel common terms) $\"\"$ $\"\"$ (Substitute $\"\"$ )

\

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

\

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

\

The value of $\"\"$ .