So I have a system of equations (composed of force and moment eqns) and I can split them up into matrices which will then look like this: Ax = B I know the matrices A and B are correct, because when I plug in known values for x from a working prog, I get the correct values for B. So that must mean A and B are correct, right? HOWEVER, I am not able to invert A so that I may solve x = inv(A) * B. The determinant of A is 0, so it's a singular matrix. So what is the significance of an singular matrix? Maybe there are redundant eqns involved? Am I looking at a statically indeterminant problem? How does one fix this?