I have a problem with solving a matrix

Hi! i have a problem with solving a 19x19 matrix.

I've got an error !NUM when start MINVERSE a matrix.

Is it a problem if some rows are 0 all of them?

P.S. I've checked it right now after I've read some posts on here with MDETERM and it returns 0.

P.P.S. And any idea how to solve system of linear equotations in excel only by formulaes and functions and not in VBA?