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: 7

Answer

15

Work Step by Step

Multiples of 5: 5, 10, 15, 20, 25 In order to find the LCM of 3 and 5, we must find the first multiple of 5 that is also divisible by 3. 5 and 10 are not divisible by 3. $15\div3=5$ Therefore, 15 is the LCM of 3 and 5.
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