Hello I just saw this on wikipedia. 1= 0*a = (1-1)*a = 1*a-1*a = a-a= 0 What is done here that is wrong or "forbidden". This cant be correct ? thank you

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Originally Posted by echo123 Hello I just saw this on wikipedia. 1= 0*a = (1-1)*a = 1*a-1*a = a-a= 0 What is done here that is wrong or "forbidden". This cant be correct ? thank you You really have to ask? The stuff in red is utter garbage. And from garbage comes more garbage.

Originally Posted by echo123 Hello I just saw this on wikipedia. 1= 0*a = (1-1)*a = 1*a-1*a = a-a= 0 What is done here that is wrong or "forbidden". This cant be correct ? thank you The first step presupposes that there is a number "a" such that 1 = 0*a. Since this is not possible, the rest is not valid. -Dan

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