Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 1 - Foundations for Algebra - Pull it All Together - Page 67: Task 3A

Answer

$d=10-c$

Work Step by Step

Since you are buying gifts for 10 people, the total number of CDs (c) and DVDs (d) is 10. $d+c=10$ $d+c-c=10-c$ $d=10-c$
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