Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 3 - Adding and Subtracting Fractions - 3.2 Least Common Multiples - 3.2 Exercises - Page 211: 3

Answer

False

Work Step by Step

The least common multiple of two numbers is the smallest number into which the original numbers divide. Therefore, we can look at a list of multiples of each number to find the LCM. 3- 3, 6, 9, 12, 15, 18, 21 7- 7, 14, 21 We can see that 21 is the smallest number into which both 3 and 7 divide. Therefore, 28 is not the LCM of 3 and 7.
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