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Answered 2009-05-14 23:52:04

It is essentially a list of equations that have common unknown variables in all of them. For example,

a+b-c=3

4a+b+c=1

a-2b-7c=-2

would be a system of equations. If there are the same number of equations and variables you can usually, but not always, find the solutions. Since there are 3 equations and 3 variables (a, b, and c) in this example one can usually find the value of those three variables.

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