$Q_3+2Q_4-2Q_2=0$

$Q_5+2Q_6-2Q_4=0$

$3Q_7-2Q_6=0$

$Q_1=Q_2+Q_3$

$Q_3=Q_4+Q_5$

$Q_5=Q_6+Q_7$

$[$Hint: Supplement these equations with $Q_1=1$ as the first equation to end up with $7$ equations in seven unknowns$]$

Find A matrix and b vector

Solve the system of equations to obtain the flow in every stream using Gauss Naive elimination method $[$Call it X$\_$GN $(71$ column vector$)]$

Solve using Gauss elimination with pivoting $[$Call it X$\_$GP$]$

Solve using Gauss Seidel $[$Call it x$\_$GS$]$

$[$Note: Getting a solution full of NaN means the method is unable to solve the system. If this happens think about the reason for that$]$

Script$=$

note$-$write the script in MATLAB code not in python or any other,just in MATLAB not explain it but write the actual script