I would like to solve the a sytem of 5 differential equations for a combution process and i dont know how to do.

my enties are as follows

with(plots);
PDEtools[declare](prime = t);
print(`output redirected...`); # input placeholder
derivatives with respect to t of functions of one variable will

   now be displayed with '
MW = 29;
print(`output redirected...`); # input placeholder
   ...