Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Skills Handbook - Factors and Multiples - Exercises: 4

Answer

21

Work Step by Step

The GCF, or Greatest Common Factor, of multiple numbers is the greatest number that can be multiplied by a whole number to get all of the numbers. Thus, the Greatest Common Factor of 42, 63, and 105 is 21.
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