Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 1 - Section 1.2 - Operations with Real Numbers and Simplifying Algebraic Expressions - Exercise Set: 42

Answer

$-\dfrac{3}{10}$

Work Step by Step

Make the fractions similar using their LCD, which is 10, to obtain: $=\dfrac{1}{10} - \dfrac{4}{10}$ RECALL: $a-b = a+(-b)$ Thus, $\frac{1}{10} - \frac{4}{10} \\= \frac{1}{10} + \frac{-4}{10} \\=-(\frac{4}{10}-\frac{1}{10}) \\=-\frac{3}{10}$
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