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A + B = B + A ?

Date: 7/24/96 at 13:37:22
From: Anonymous
Subject: A + B =? B + A

Is A + B = B + A true or not true?

Date: 7/24/96 at 13:46:50
From: Doctor Robert
Subject: Re: Is A + B = B + A true or not true?

It depends on what A and B are.  However, if A and B are real numbers, 
then the statement is assumed to be true.  It is called the 
commutative axiom of addition.  

-Doctor Robert,  The Math Forum
 Check out our web site!  http://mathforum.org/dr.math/   
Associated Topics:
Elementary Addition

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