Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 8 - Systems of Linear Equations and Problem Solving - 8.4 Systems of Equations in Three Variables - 8.4 Exercise Set - Page 538: 39

Answer

No

Work Step by Step

While this is a valid approach that will work, this is not necessarily a good approach because eliminating $x$ in the first two equations is not always the easiest method. In fact, sometimes other variables in later equations can be easily isolated.
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