How to put a matrix in Solver?

[vict0r]

I'm studying strength of materials and I was trying to put this matrix in Resolv to just change the value of alpha and getting the new matrix, but it apparently does not accept a matrix with variables?

   

[Joe Horn]

Some readers of this forum might not know that the Solve app is called "Resolv" when the Prime's language is set to Portuguese. So vict0r is asking how to get the Solve app to work on symbolic matrices like the example given.