Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter R - Section R.1 - Factors and the Least Common Multiple - Exercise Set: 51

Answer

120

Work Step by Step

We can find the LCM by checking which multiple of 15 is also a multiple of 2 and 8. 15 * 1 = 15 15 * 2 = 30 15 * 3 = 45 15 * 4 = 60 15 * 5 = 75 15 * 6 = 90 15 * 7 = 105 15 * 8 = 120 (= 2 * 60) 120 is the first multiple of 15, 8, and 2, so it is the LCM.
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