Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 9 - Basic Algebra - Test - Page 704: 23

Answer

$r=31$

Work Step by Step

We are given the equation $30=-1+r$. In order to solve, we must add 1 to both sides. $30+1=-1+1+r$ Therefore, $r=31$.
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