Question 23489: how do u solve a system of equations?
Answer by longjonsilver(2297)   (Show Source):
You can put this solution on YOUR website! Given a number of equations, say n equations, you need upto n unknowns, to be able to solve them.
eg 3 equations...you can solve these given 1, 2 or possibly 3 unknowns. Having 4 unknowns or more..it will be impossible.
As to the processes of solving 2 equations...these are simultaneous. There are Lessons on this website on how to do this: look for solving linear equations etc.
As for 3 equations, best using matrix theories like Gaussian elimination or Cramers Rule. Again, Lessons on this website for these.
Above 3 equations, then cry or get some pre-written software that will do the number crunching for you...to save your sanity.
Jon
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