What's wrong with my code?

I wrote a code to solve a system of linear equation (a circuit consists of 4-meshes) using Gauss-Jordan elimination method,, but the problem is that the code doesn't display the x-column

this is my code

%Reading the values of resistors, voltages,

R=input(' Enter the values of resistors in k ohm , [ R1 R2 R3 R4 R5 R6 R7 R8 R9 ] = ');

V=input(' Enter the values of voltages in volt , [ V1 V2 ] = ');

%Describe the resistor matrix R

R= [ R(8)+R(5)+R(3) , -R(5) , 0 , -R(3) ;

      -R(5) , R(7)+R(1)+R(4)+R(5) , -R(4) , 0 ;

      0 , -R(4) , R(2)+R(6)+R(4) , -R(6) ;

      -R(3) , 0 , -R(6) , R(6)+R(9)+R(3) ];

%Describe the voltage matrix V

V= [ V(1) ;

      0 ;

      0 ;

      V(2) ];

%mesh currents in mA using Gause-Jordan Elimination method

C=[R,V];                               %augmanted matrix

for j=1:4
    for z=2:4                          %pivoting
        if R(j,j)==0
            t=R(1,:);R(1,:)=R(z,:);
            R(z,:)=t;
        end
    end

for i=j+1:4                             %Convert the elements below the major diagonal to zeros
    R(i,:)= R(i,:)-R(j,:)*( R(i,j)/R(j,j) );
end
end

for j=4:-1:2                            %Convert the elements above the major diagonal to zeros
    for i=j-1:-1:1
        R(i,:)= R(i,:)-R(j,:)*( R(i,j)/R(j,j) );
    end
end

for s=1:4                               %Convert the elements on the major diagonal to ones
    R(s,:)= R(s,:)/R(s,s);
    x(s)= R(s,4);
end

disp (' Gause-Jordan Elemination method: ');
R
x'

Answer 1

[dpb]

...the code doesn't display the x-column

Bad syntax in

disp (' Gause-Jordan Elemination method: '); R x'

Matlab can't tell R the variable from a supposed function of the same name here. Try sotoo...

disp (' Gause-Jordan Elemination method: '); disp([R x'])

BTW, you might look at

doc \

unless the use of G-J on your own is part of the assignment. Even if so, probably worth checking the comparative results.

[Fatima Al Marzoqi]

I try what you mention , but still the last column is same as the forth column. No, Not only the Gause-Jordan

[dpb]

Not enough info...how about some data for comparison?

[Fatima Al Marzoqi]

It works finally ! Thank you

[Image Analyst]

So mark it as "Accepted" then so dpb can get credit for it.