### Home > MC1 > Chapter 4 > Lesson 4.1.2 > Problem 4-19

4-19.

. The first four multiples of 7 are 7, 14, 21, and 28. Homework Help ✎

What are the first six multiples of 9?

What are the first six multiples of 12?

What is the lowest number that is a multiple of both 9 and 12?

The first multiple of 9 is 9(1) = 9.

The second multiple of 9 is 9(2) = 18.

The third multiple of 9 is 9(3) = ?

Look to part (a) for assistance.

This is the first number that appears in both of your lists.