$4T_1-T_2 - T_4 = 30$   
$-T_1+4T_2 -T_3 = 60$  
$-T_2 + 4T_3 + T_4 = 70$  
$-T_1 + T_3 + 4T_4 = 40$  

Is it possible to put the above system of equations parallel to right side of the below matrix?

$
\begin{bmatrix}  
 4 & -1 & 0 & -1 & 30 \\  
-1 & 4 & -1 & 0 & 60 \\   
 0 & -1 & 4 & 1 & 70 \\  
 -1 & 0 & 1 & 4 & 40 \\
\end{bmatrix}
$

{Finished]

$\begin{array}{rcl} 
4T_1-T_2 - T_4 &=& 30 \\
 -T_1+4T_2 -T_3 &=& 60\\ 
-T_2 + 4T_3 - T_4 &=& 70\\
 -T_1 - T_3 + 4T_4 &=& 40\\
 \end{array} \qquad 
\begin{bmatrix} 
4 & -1 & 0 & -1 & 30 \\ 
-1 & 4 & -1 & 0 & 60 \\ 
0 & -1 & 4 & -1 & 70 \\ 
-1 & 0 & -1 & 4 & 40 \\
 \end{bmatrix} \space
 \begin{array}{rcl} 
R_1 &↔& R_4 \\
 R_2 &↔&R_3 \\ \\ \\ \end{array} $