Not a Problem
1: P:={{10,25,10},{15,5,25},{25,10,55}}
2: P {{m1},{m2},{m3}}={{s},{t},{b}}
3: P^-1 $2 did not yield the expected result >{{m1},{m2},{m3}}=P^-1 {{s},{t},{b}}
Files:
MatrixGleichung.ggb
The same problem 
equation with matrix is not a matrix of equations.
I'd like yes but at this time is not
GG does not calculate with equations in matrixes
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