Answer
$3(4-b)$
Work Step by Step
The only factor $-3b$ and $12$ have in common is $3$. Factoring it out yields $-3b+12=3(-b+4)=3(4-b)$.
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter P, Prerequisites - Section P.6 - Factoring - P.6 Exercises - Page 42: 8
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