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  3. 2 it is fairly easy to proveeft cancellationquot and quotright...

Question: 2 it is fairly easy to proveeft cancellationquot and quotright...

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2. It is fairly easy to prove-eft cancellation and right cancellation, rules in a group G: if xa xb then a = b; likewise, if ax = bx, then a = b. Demonstrate, however, that there is not a “middle cancellation rule: for a group G with elements a, b, e,d, and x, t is not necessarily true that if axb cxd, then ab ed
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