CPM Homework Help : AC Problem 6-29

CPM Homework Banner

CPM Homework Banner

Home > AC > Chapter 6 > Lesson 6.1.3 > Problem 6-29

6-29.

As Sachiko solved the equation $(x+2)+3=9$ , she showed her work in the table below. Copy the table and provide justification for each step.

Statement

1. $(x+2)+3=9$

2. $x+(2+3)=9$

3. $x+5=9$

4. $x+5−5=9−5$

5. $x=4$

Reason

Given

Hint:

Decide what rule goes with each step being made.

Example:

Statement

1. $(x+2)+3=9$

2. $x+(2+3)=9$

3. $x+5=9$

4. $x+5−5=9−5$

5. $x=4$

Reason

Given

Associative Property

© 2019 CPM Educational Program. All rights reserved.