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 - Test: Chapter 8 - Page 573: 15

Answer

$$x=3,\:y=1,\:z=-2$$

Work Step by Step

Solving the equation using Matrices, we find: $$ \begin{bmatrix}1&3&-3&¦&12\\ 3&-1&4&¦&0\\ -1&2&-1&¦&1\end{bmatrix} \\ \begin{bmatrix}1&0&0&¦&3\\ 0&1&0&¦&1\\ 0&0&1&¦&-2\end{bmatrix}\\ x=3,\:y=1,\:z=-2$$
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