a/a-b = c/c-d

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- Dec 1st 2009, 11:57 PMthe undertakerprove in algebra
a/a-b = c/c-d

- Dec 1st 2009, 11:59 PMBacterius
Er ... and what are you trying to prove exactly ? Please add more detail ...

- Dec 2nd 2009, 08:54 AMrowe
- Dec 2nd 2009, 09:22 AMDefunkt
You assume here that which is actually what you're trying to prove...

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If then , and thus .

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Therefore, as shown above, , as does .

, QED.

Not to mention that it is quite obvious at a glance that this equation will definitely not hold for any four real numbers... what if we choose

? - Dec 2nd 2009, 09:40 AMrowe
Yeah, that was a pretty bad effort. Thanks for your pointers