#### Answer

$ba$, commutative property of multiplication

#### Work Step by Step

$ab=a \cdot b = b \cdot a = ba$
To prove, $ab=ba$, divide both sides by $a$ or $b$ and the equations will become equal.

Published by
Brooks Cole

ISBN 10:
1305115546

ISBN 13:
978-1-30511-554-5

$ba$, commutative property of multiplication

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