Answer
r=-$\frac{35}{3}$
Work Step by Step
switch sides
-7-3r=28
add 7 to both sides
-3r=35
divide both sides by -3
r=-$\frac{35}{3}$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 6 - Section 6.1 - Equations - Exercises - Page 238: 48
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