### Home > CC4 > Chapter A > Lesson A.1.5 > Problem A-51

A-51.

**A-51.**WHICH IS GREATER?For each Expression Comparison Mat below, simplify and determine which side is greater. Record your work by showing each move and the simplified expression that remains afterward. Homework Help ✎

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

Remove the pairs from the bottom and the top.

1 − *x* < 3 − *x*

The right side is greater.

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