Answer
$-\frac{1}{60}$
Work Step by Step
$\frac{9}{10}-\frac{11}{12}=(\frac{9}{10}\times\frac{6}{6})-(\frac{11}{12}\times\frac{5}{5})=\frac{54}{60}-\frac{55}{60}=\frac{54}{60}+(-\frac{55}{60})=-\frac{1}{60}$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 1 - Sections 1.2-1.3 - Integrated Review - Algebraic Expressions and Operations on Whole Numbers - Page 29: 6
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