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: 57

Answer

360

Work Step by Step

We can find the LCM by checking which multiple of 30 is also a multiple of 8 and 18. 30 * 1 = 30 30 * 2 = 60 30 * 3 = 90 30 * 4 = 120 30 * 5 = 150 30 * 6 = 180 30 * 7 = 210 30 * 8 = 240 30 * 9 = 270 30 * 10 = 300 30 * 11 = 330 30 * 12 = 360 (= 8 * 45, 18 * 20) 360 is a multiple of 30, 8, and 18, so it is the LCM.
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