Answer
See below.
Work Step by Step
$10x+y=7\\y=7-10x$
Hence here: $y=7-10(3)=7-30=-23$
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 1, Equations and Inequalities - Chapter Review - Page 63: 25
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