College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Section P.8 - Solving Basic Equations - P.8 Exercises: 32

Answer

$r=3$

Work Step by Step

$r-2[1-3(2r+4)]=61$ We distribute: $r-2(1-6r-12)=61$ And simplify: $r-2(-6r-11)=61$ And distribute again: $r+12r+22=61$ And combine $r$ terms: $13r=39$ And solve for $r$: $r=3$
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