\[
\systeme{x -y + az = 1,
2x - y + z = -1,
ax + y - z = 1
\]
its a equation system with x,y,z as usual, but I have the unknown a also infront of z in the first equation and in front of x in the third equation. I want the output to be 4 columns and the x should align with x and so on. I want systeme to understand that not treat a as a varible but as a number.
Now the output of the first row is:
az +x - y = 1, when it should be x-y+az=1