Answer
$ts$
Work Step by Step
The commutative law of multiplication states that $ab=ba$ (where $a$ and $b$ are real numbers).
That is, changing the order of multiplication does not affect the answer. Therefore, $st=ts$.
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 1 - Introduction to Algebraic Expressions - 1.2 The Commutative, Associative, and Distributive Laws - 1.2 Exercise Set - Page 17: 21
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