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

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}
$