Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 2 - Real Numbers - 2.3 - Real Numbers and Algebraic Expressions - Problem Set 2.3 - Page 68: 49

Answer

4.3

Work Step by Step

In order to follow order of operations, we first multiply and then we add and subtract: $7(0.6)+0.9-3(0.4)+0.4$ =$(7\times0.6)+0.9-(3\times0.4)+0.4$ =$(4.2)+0.9-(1.2)+0.4$ =$(4.2+0.9)-1.2+0.4$ =$(5.1)-1.2+0.4$ =$(5.1-1.2)+0.4$ =$(3.9)+0.4$ =$4.3$
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