Answer
$14$
Work Step by Step
First, we express each number as a product of its prime factors:
$42=2\times3\times7$
$70=2\times5\times7$
Since one 2 and one 7 are common to both the numbers:
Greatest Common Factor$=2\times7=14$
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 2 - Real Numbers - Chapters 1-2 Cumulative Review Problem Set - Page 91: 25
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