$\"\"$

The equation is $\"\"$ .

Distribute terms using distributive property: $\"\"$ .

$\"\"$

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

Subtract 7.7 from each side.

$\"\"$

Divide each side by 3.6.

$\"\"$

Check:

To check the solution, substitute $\"\"$ in original equation.

$\"\"$

The value of $\"\"$ .