### Home > CC3 > Chapter 3 > Lesson 3.1.1 > Problem 3-5

3-5.

At the fair, Kate found a strange machine with a sign on it labeled, “Enter a number.” When she pushed the number

What is the machine doing?

Find a pattern.

For every number entered into the machine, it subtracts

. What would the machine display if she entered

? Use the pattern you found in part (a).