Answer
$r=-3,s=-5, t=9$
Work Step by Step
We get infinite solutions if $r=-3,s=-5, t=9$ because then the two equations are the same. Thus, we essentially have $1$ equation but two unknown variables.
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 3 Linear Systems and Matrices - 3.2 Solve Linear Systems Algebraically - 3.2 Exercises - Skill Practice - Page 165: 54b
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