in equality, a, b, c are positive integers.

What is total of minumum?

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- August 11th 2008, 05:11 AM #1

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- Jul 2008
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- August 11th 2008, 05:23 AM #2

add the two equations together:

move things around:

factor:

factor again:

hmm, 7 is a prime number though and so cannot have two integer factors,__unless__and__or__and (which means that in this case either a or c must be zero, I don't know if you consider that a positive integer)

In the first case: and

So if we add those two together:

In the second case: and

So if we add those two together:

So the answer is: