#### Answer

$\frac{3}{7}$

#### Work Step by Step

$12=\underline2\times\underline2\times3$
$28=\underline2\times\underline2\times7$
GCF=$2\times2=4$
$\frac{12}{28}=\frac{12\div4}{28\div4}=\frac{3}{7}$

Published by
Pearson

ISBN 10:
0321955048

ISBN 13:
978-0-32195-504-3

$\frac{3}{7}$

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