Select the correct answer.
Molly rewrote the equation as shown:

Which property did she use to rewrite the equation?
addition property of equality
distributive property
multiplication property of equality
substitution property

Molly used the addition property of equality to rewrite the equation. This property states that you can add the same value to both sides of an equation without changing its equality. By adding to both sides, she maintains the balance of the equation while rearranging the terms.

Additionally, this strategy is crucial in solving equations systematically. Many students stumble at this point by forgetting the need to balance both sides, leading to incorrect solutions. Always remember to apply the same operations to both sides of the equation!