by "Jack" <jj@[EMAIL PROTECTED]
>
Apr 27, 2008 at 01:07 PM
"Jack" <jj@[EMAIL PROTECTED]
> wrote in message
news:fGQQj.89597$fx2.9695@[EMAIL PROTECTED]
>>> c) y'-x'=y-x
>>
>> This makes no sense: what are x' and y'?
>>
>
>
> Given any positive integer i, if y-x=y'-x', then x' = x+ i and y'=y+i.
Actually, i can be either positive or negative; but not zero.
