### Home > MC2 > Chapter 5 > Lesson 5.1.3 > Problem 5-39

5-39.

What are the differences between the two groups of numbers?

Does it make the equation any easier to solve?

Regrouping simplifies the arithmetic.

First simplify the terms in parentheses.

What mathematical actions did Alex take?

What property is this?

The Associative Property of Addition.

Remember, when adding, you can separate the whole numbers from the fractions.