Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 7 - Vocabulary Check - Page 552: 3


-$\frac{a}{b}$ = $\frac{-a}{b}$ = $\frac{a}{-b}$

Work Step by Step

We know (-1)$\frac{a}{b}$ = $\frac{-a}{b}$. Also, $\frac{-a}{b}$ = $\frac{a}{-b}$. To see this, cross multiply. (-a)(-b) = (a)(b)? ab = ab ....... (Since (-1)(-1) = 1).
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