Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - 1.2 - Prime and Composite Numbers - Problem Set 1.2 - Page 14: 93



Work Step by Step

If $x$ and $y$ are non-zero whole numbers, and $y$ is a multiple of $x$, it means $y$ is larger than or equal to $x$. $y$ cannot be a factor of $x$ (since it is larger); thus, $x$ must be the greatest common factor of $y$.
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