Answer
$n=-6$
Work Step by Step
Use the rule $\frac{a}{c}=\frac{b}{d} \longrightarrow ad=bc$, more popularly known as cross-multiplication, to obtain:
$3(8) = 4(-n)
\\24=-4n$
Divide $-4$ to both sides:
$\frac{24}{-4} = \frac{-4n}{-4}
\\-6=n$
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 1-3 - Cumulative Review - Page 228: 15
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