SOLUTION: Solve the simultaneous equations a + b + c + d = 0 2a - 2b + 3c - 3d = 0 9a + 9b + 4c + 4d = - 1 -18a + 18b - 12c + 12d = 7

Algebra ->  Test -> SOLUTION: Solve the simultaneous equations a + b + c + d = 0 2a - 2b + 3c - 3d = 0 9a + 9b + 4c + 4d = - 1 -18a + 18b - 12c + 12d = 7      Log On


   

Question 1137705: Solve the simultaneous equations
a + b + c + d = 0
2a - 2b + 3c - 3d = 0
9a + 9b + 4c + 4d = - 1
-18a + 18b - 12c + 12d = 7
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
There are online solvers for up to 10 by 10 matrices.
Maybe more now.
----
If you just want the answer, use one of them.