Elementary Algebra

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

Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - 1.4 - Integers: Multiplication and Division - Problem Set 1.4 - Page 27: 78

Answer

20

Work Step by Step

We first follow the instructions to plug in 68 for F. When we are simplifying a fraction, we simplify the numbers in the numerator and the denominator before dividing. According to order of operations, we first consider everything inside of the parenthesis. Because multiplication is before subtraction and addition in order of operations, once within the parenthesis, we first multiply, and then we add and subtract. $5(68-32) \div 9 = 5(36) \div 9 = 180 \div 9 =20$
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