Algebra: A Combined Approach (4th Edition)

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

Chapter R - Review - Page R-33: 4



Work Step by Step

Step 1. Write the prime factorization of each number. Step 2. Write the product containing each different prime factor (from Step 1) the greatest number of times that it appears in any one factorization. This product is the LCM. $7=7$ $42=2*3*7$ $LCM=2*3*7=42$
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