Question 158048
The matrix


[1  2  5 | -2]
[5  0 -3 |  8]
[2 -1  0 |  0] 


translates to the system


{{{system(x+2y+5z=-2,5x+0y-3z=8,2x-y+0z=0)}}}



note: you can ignore the terms with the zero coefficients to get the simpler system


{{{system(x+2y+5z=-2,5x-3z=8,2x-y=0)}}}