title: define / declare variable in Scilab`
body: <p>I would like to ask how I can define / declare a variable in Scilab.  In some PDFs that I read, it says that I can just type it in and Scilab will take care of the declaration.  Not so.  I want to set up a matrix equation of something like:</p>
  
  <p>Ax + By + Cz = D</p>
  
  <p>Mx + Ny + Pz = E</p>
  
  <p>Rx + Sy + Tz = F</p>
  
  <p>And then I want to get the general value of x, y, x in terms of A, B, C, D, E, F, M, N, P, R, S, T.  I remember this is possible with Matlab.  And later on, I want to plug in these values to get actual numbers.  Please help.</p>