Answer
$-24$
Work Step by Step
$\left| \begin{array}{cc}
-7 & 6 \\
\frac{1}{2} & 3 \end{array}
\right|=ad-bc=-7\times3-6\times\frac{1}{2}=-21-3=-24$
Elementary Linear Algebra 7th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
1-13311-087-8
ISBN 13:
978-1-13311-087-3
Chapter 3 - Determinants - 3.1 The Determination of a Matrix - 3.1 Exercises - Page 110: 7
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