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 - 8.6 Elimination Using Matrices - 8.6 Exercise Set - Page 551: 18



Work Step by Step

Solving the system of equations using Matrices, we find: $$ \begin{bmatrix}4&9&0&¦&8\\ 8&0&6&¦&-1\\ 0&6&6&¦&-1\end{bmatrix}\\ \begin{bmatrix}1&0&0&¦&\frac{1}{2}\\ 0&1&0&¦&\frac{2}{3}\\ 0&0&41&¦&-\frac{5}{6}\end{bmatrix}\\ a=\frac{1}{2},\:b=\frac{2}{3},\:c=-\frac{5}{6}$$
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