Hi,
On page 14 of my mathcad there is a solve block for 42 variables. However, an error keeps on appearing asking me to change already set values (i.e. Densities or Molecular Weights). This keeps on appearing until it asks me to change 'Mass.3" under my 'Overall balance over both extractors' title, which I cannot do.
Please help, it would be incredibly useful. What can I do to make this solve block work?
Thank you for your time.