There is always a solution and it is always only one --

you have n linear independent vectors (that is the determinant of the
linear system is <> 0) and using Cramer's rule you have a single
solution.

Ok
I understand that but i decided that there are bugs in my proof
so ...

But they are modular equations. Is Cramer's rule still valid for such
equations?

> There is always a solution and it is always only one --
>
> you have n linear independent vectors (that is the determinant of
the
> linear system is <> 0) and using Cramer's rule you have a single
> solution.

3
1 2 -1
2 3 -1
2 3 -1

Edited by author 17.07.2010 19:16

Edited by author 17.07.2010 19:16

3
1 -1
1 2 -1
2 -1