Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Appendix E - Exercise Set: 8


The determinant is $\frac{4}{21} $

Work Step by Step

The determinant is $\frac{5}{7}\times \frac{2}{3} - \frac{1}{3}\times\frac{6}{7}=\frac{10}{21}-\frac{6}{21}=\frac{4}{21} $
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