Given the equation:

You can follow these steps in order to find an equivalent equation:
1. Apply the Addition Property of Equality by adding 6 to both sides of the equation:

2. Apply the Multiplication Property of Equality by multiplying both sides of the equation by 3:

3. Apply the Subtraction Property of Equality by subtracting this term from both sides of the equation:

Then:

4. Rewrite the equation in this form:

Therefore, the answer is: Option 4.