Answer
$4a+b$
Work Step by Step
We can combine the $3a$ and the $a$ because they both have $a$. Therefore, we have $3a+1a+b=4a+b$
Algebra 2 Common Core
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133186024
ISBN 13:
978-0-13318-602-4
Chapter 2 - Functions, Equations, and Graphs - Get Ready! - Page 57: 2
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