Answer
$ y= \frac{x}{3}-3$
Work Step by Step
By subtracting $x$ from each side and then dividing each side by $-3$, we get:
$$x-3y=9\Longrightarrow -3y=9-x \\
\Longrightarrow y=-\frac{9-x}{3}=\frac{x}{3}-3
.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 8 - Section 8.1 - Linear Equations with Two Variables - Exercises - Page 297: 30
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