Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 4 - Section 4.2 - Adding and Subtracting Polynomials - 4.2 Exercises: 86

Answer

$20k$

Work Step by Step

Removing the grouping symbols and then combining like terms, the given expression, $ 5k-(5k-[2k-(4k-8k)])+11k-(9k-12k) ,$ simplifies to \begin{array}{l}\require{cancel} 5k-(5k-[2k-4k+8k])+11k-9k+12k \\\\= 5k-(5k-2k+4k-8k)+11k-9k+12k \\\\= 5k-5k+2k-4k+8k+11k-9k+12k \\\\= 20k .\end{array}
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