1. The Addition property of equality states that, if:

Then:

2. The Subtraction property of equality states that, if:

Then:

3. According to the Division property of equality, if:

Then:

4. According to the Multiplication property of equality, if:

Then:

In this case, you have the following equation:

You can identify in the picture that in Step 1, each term inside the parentheses was multiplied by the fraction, then the Distributive property was applied:

In Step 2