Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 1 - Introduction to Algebraic Expressions - 1.6 Subtraction of Real Numbers - 1.6 Exercise Set - Page 51: 149


The answer is below.

Work Step by Step

To do this problem, you need to use the negative sign, the minus sign (note that these two are not the same), and the parenthesis button. After all, parenthesis are necessary to to indicate the correct order of operations. (Of course, you also need to hit the $9$ and $7$ buttons.
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