Answer
r=4.3
Work Step by Step
Subtract 3.7 from both sides of the equation to isolate the variable.
r+3.7=8
r=8-3.7
r=4.3
Check the answer.
(4.3)+3.7=8
8=8
Introductory Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-805-X
ISBN 13:
978-0-13417-805-9
Chapter 2 - Section 2.1 - The Addition Property of Equality - Exercise Set - Page 120: 41
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