SOlving LInear Equations in Python(Symoy, NUmpy) - Coefficient Problem

[quest]

well, the problem is here a,b,c,d are variables which I want to find them but rho00, rho01 rho10, rho11 are the free varibles which will not take a value and I do not know how to give these equations to python. Otherwise I can use

fsolve

for non linear equations or

nonlinear solver

is one of the tool too. But I do not know how to give these equations to python to solve them with free variables