Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 6 - Cumulative Review - Page 466: 48

Answer

1:3

Work Step by Step

The ratio of 7 to 21 is written as 7:21. Simplify by dividing both sides of the ratio by 7, 1:3.
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