$\"\"$

The equation is $\"\"$ .

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

$\"\"$

Subtract 6a from each side.

$\"\"$

Combine like terms using distributive property: $\"\"$ .

$\"\"$

Divide each side by 3.

$\"\"$

Check:

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

$\"\"$

The solution is true. $\"\"$

The value of $\"\"$ .