i'm looking for integer math formulas, dealing with a hand full of
components, but 1 of the components has no influence on the result:

i.e. the values A, B, C, D and E are used within the formula, but only
the value of A, B, C and D has influence on the result, while the E may
be any value, without changing the result.

examples like (A+B+E+C+D-E) are a bit too simple, as you can see at a
first glance that E is eliminated.

thanx!

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