Answer
$20y-11$
Work Step by Step
$(15y-7)+(5y-4)$
$=15y-7+5y-4$
$=15y+5y-7-4$
$=20y-11$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 10 - Section 10.2 - Integrated Review - Operations on Polynomials - Page 712: 2
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