Teacher2Teacher 
Q&A #267 
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From: Loyd <loydlin@aol.com> To: Teacher2Teacher Public Discussion Date: 2003022307:20:33 Subject: Re: An algebraic "proof" that 2 = 1; division by zero Claudia's proof had been around for a long time. I am glad she posted it here, because I can't always remember it when I want it. The reason it works is that in the beginning a was set equal to b and later, both sides of the equation were divided by ab which is of course = zero. This problem is an excellent example of why you can't divide by zero!
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