This one didn't come from Emma or Brad's maths teachers, but I reckon it's kind of cool and worth sharing.

If we say x=y then x-y=0 (No arguments? Good!)

Obviously then 2x-2y also = 0 (You can't argue with this, it's a fact given what we said above) 

Since both equations above equal 0 then we can say 2x-2y = x-y (Are you following me?)

This can be re written as 2(x-y) = (x-y) (Once again, its a fact)

Now if we divide both sides by (x-y) we get;

2=1

I bet you didn't know that!!!!!!!

Can you spot where it all went a bit wrong? 

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Anonymous   |IP:121.44.223.xxx |12-05-2007 08:34:58 ha ... if 2(x-y)=x-y and x-y =0; substituting 0 for (x-y) into the equation gives 2(0)=0..... plus dividing 0 by anything = 0 so in this case dividing (x-y) ie 0 by x-y ie 0 = 0!!! Not very clear am i?? but i get it!! Reply

Phill  - Your right!   |IP:58.169.74.xxx |12-05-2007 10:16:48 Yep, thats it. You can't divide a number by zero, that bit is just hidden by all the silly x's and y's. Hey, why don't you let us know who you are (first name only will do) and where you are from? Reply

Phill  - re: Your right!   |IP:58.169.74.xxx |12-05-2007 10:20:38 Hey, why don't you let us know who you are (first name only will do) and where you are from? My guess is that you are in Australia somewhere and you could possable even be in Tasmania. Perhaps I already know you? Reply

Anonymous  - sorry   |IP:121.44.223.xxx |14-05-2007 10:37:08 thought i had signed in. It is I - Lala!!! Reply

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