Answer
$6$
Work Step by Step
$\frac{2(-5)-1(-4)}{5(-5)-6(-4)}=\frac{-10+4}{-25+24}=\frac{-6}{-1}=6$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 3 - Section 3.4 - Matrix Solutions to Linear Systems - Exercise Set - Page 231: 71
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