Question 23489
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