Answer
$=-5r+5$.
Work Step by Step
The given expression is
$=4r+6-9r-1$
Use commutative property of addition.
$=4r-9r-1+6$
Use distributive property.
$=(4-9)r-1+6$
Simplify.
$=-5r+5$.
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 - Maintaining Mathematical Proficiency - Page 355: 2
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