Answer
the fractions are equivalent.
Work Step by Step
Check the cross products, $7\times 27$ and $9\times 21$
$7\times 27= 189$
$9\times 21=189$
So, the cross products are equal $\Rightarrow$ the fractions are equivalent.
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 4 - Section 4.2 - Factors and Simplest Form - Practice - Page 232: 10
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