Answer
$4a+6$.
Work Step by Step
The given polynomial is
$=(3a+7)+(a-1)$
Clear the parentheses.
$=3a+7+a-1$
Group like terms.
$=3a+a+7-1$
Combine like terms.
$=4a+6$.
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 7 - Polynomial Equations and Factoring - Chapter Review - Page 410: 5
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