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 - Chapter 1 Review Problem Set - Page 38: 41


$6+6-4+8+8+8-1 = 31$

Work Step by Step

On the first two plays gained Marquette 6 yards each time, making the expression: $6+6$ The next play lost him 4 yards, making it: $6+6-4$ The next three plays gained him 8 yards each, making the expression: $6+6-4+8+8+8$ The final play lost him 1 yard, making the final expression: $6+6-4+8+8+8-1$ This can be simplified: $(6+6)-4+(8+8+8)-1$ $=12-4+(8+8+8)-1$ $=8+8+8+8-1$ $=32-1$ $=31$
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