### Home > CAAC > Chapter 2 > Lesson 2.1.8 > Problem 2-77

2-77.

Use the expression comparison mat on the eTool below to simplify.

Click the link at right for the full version of the eTool: 2-77a HW eTool.

Refer to the Math Notes box for help with reading the expression comparison mats.

Remove the pairs from the bottom and the top.

The right side is greater.

1 < 3

Use the expression comparison mat on the eTool below to simplify.

Click the link at right for the full version of the eTool: 2-77b HW eTool.

Refer to the steps in part (a) and the Math Notes box.