### Home > CCA2 > Chapter A > Lesson A.1.1 > Problem A-9

A-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. Homework Help ✎

Original problem: Simplify

He knows that

Use the Associative and Commutative Properties to rewrite the expression.

Simplify.