Answer
$x=-y-9$
Work Step by Step
Using the properties of equality, in terms of $
x
,$ the given expression, $
-x-y=9
,$ is equivalent to
\begin{array}{l}\require{cancel}
-x=y+9
\\\\
x=-y-9
.\end{array}
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 8 - Coordinate Geometry and Linear Systems - 8.1 - Cartesian Coordinate System - Problem Set 8.1 - Page 335: 28
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