Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 4 - Number Representation and Calculation - 4.4 Looking Back at Early Numeration Systems - Concept and Vocabulary Check - Page 241: 7



Work Step by Step

True, we can express that by the symbol that follows that one and subtracting the symbol itself from it. (E.g. $XXXX$ is correctly expressed by $XL$.
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