To solve the equation , start by distributing the negative sign across the second bracket:

.

This simplifies to , leading to . Now, subtract 6 from both sides to isolate :

, which simplifies to . Finally, divide both sides by 3 to solve for :

.

So, the solution is .

When faced with a similar equation, it’s always helpful to keep track of your operations while simplifying. A common mistake is forgetting to distribute or incorrectly combining like terms. Always double-check each step for accuracy!