Join Director of Product Management Todd OBoyle on April 26th as he covers the key elements of a phishing protection program. Whether youâ€™re an old hat at phishing education or considering starting a program -- we'll discuss critical components that should be in any program.

http://www.occc.edu/maustin/matrix_solutions/matrix%20solution%20of%20linear%20systems.htm

Of course, many programs exist that will do this for you such as this one.

http://www.solvemymath.com/online_math_calculator/algebra_combinatorics/system_of_equations/index.php

If you have MATLAB or Maple you could do it even more easily because you could script the whole process to get the input in there.