Answer
$4a+12$
Work Step by Step
$(7a+4)-(3a-8)$ $\longrightarrow$ distributive property
=$7a+4-3a+8$ $\longrightarrow$ combine like terms
=$4a+12$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 10 - Cumulative Review - Page 732: 52
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