Answer
$5y+21$
Work Step by Step
The given expression, $
4(y+7)-(y-2)+(2y-9)
,$ simplifies to
\begin{array}{l}\require{cancel}
4(y+7)-y+2+2y-9
\\\\=
4(y)+4(7)-y+2+2y-9
\\\\=
4y+28-y+2+2y-9
\\\\=
(4y-y+2y)+(28+2-9)
\\\\=
5y+21
.\end{array}
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 4 - Polynomials - 4.7 Polynomials in Several Variables - 4.7 Exercise Set - Page 285: 90
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