Answer
$9x+4$
Work Step by Step
RECALL:
The commutative property of addition states that for any real numbers $a$ and $b$,
$a+b=b+a$
Thus, an algebraic expression equivalent to the given expression is:
$9x+4$
Introductory Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-805-X
ISBN 13:
978-0-13417-805-9
Chapter 1 - Section 1.4 - Basic Rules of Algebra - Exercise Set - Page 53: 10
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