How do you add mixed numbers with like denominators?

To add mixed numbers with like denominators, first add the whole numbers, then add the fractions. For example:

2 2/3 + 4 1/3 = ??

First add the whole numbers.

2 2/3 + 4 1/3 = 6?

Then add the fractions.

2 2/3 + 4 1/3 = 6 3/3

Simplify. 3/3 is one.

2 2/3 + 4 1/3 = 6 + 1 = 7.