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: 54

Answer

$= 36.12$

Work Step by Step

1. Follow the acronym PEDMAS: P: arenthesis E: ponents D:ivision M:ultiplication A:ddition S:ubtraction $= $ P.E.D.M.A.S This is used to determine which order of operations is completed first from top to bottom. For example, you would complete the division of two numbers before the addition of another two numbers. In this case, we multiply and divide before subtracting and adding: Note: When doing multiplication or division, it does not matter which one you complete first. This is because the answer will still end up the same no matter which one you choose first. $0.9(12) \div 0.4 - 1.36 \div 17 + 9.2$ $=10.8 \div 0.4 - 0.08 + 9.2$ $= 27 - 0.08 + 9.2$ $= 26.92 + 9.2$ $= 36.12$
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