### Home > CCA > Chapter 5 > Lesson 5.1.1 > Problem 5-9

5-9.

Benjamin is taking Algebra 1 and is stuck on the problem shown below. Examine his work so far and help him by showing and explaining the remaining steps.

Original problem: Simplify

He knows that

Use the Associative and Commutative Properties to rewrite the expression.

Simplify.