CPM Homework Help : CAAC Problem 2-41

Read the Math Notes box above and for Lesson 2.1.2. Then examine the work below that shows one way to simplify the expression 3x + 8 + (x + 10). Decide which property was used for each step. Homework Help ✎

Hint:

Choose from among the properties below:

Associative Property of Addition::

When adding three or more numbers or terms together, grouping is not important.

Identity Property of Addition::

Adding zero to any expression gives the same expression.

Commutative Property of Addition:

Commutative Property of Addition: When adding two or more numbers or terms together, order is not important.