# Place numbering in systeme package to the left

How can I put the numbering in the systeme package to the left instead to the right?

The "naive" approach as in the following example doesn't work.

\documentclass{article}

\usepackage{systeme}
\begin{document}
\sysdelim..

\systeme{
2x + 3y = 4 @ \mathrm{I},
-x + 7y = -1 @ \mathrm{II}
}

% This doesn't work:
% \systeme{
% \mathrm{I} @ 2x + 3y = 4,
% \mathrm{II} @ -x + 7y = -1
% }

\end{document}

• anyway, the command suffixed @iii in the systeme package can most likely be altered to swap the numbering. – 1010011010 Jun 25 '15 at 9:13
• Sorry, I had a trailing systeme.tex document in the same folder. I'll check it out tomorrow somewhere... This shouldn't be too hard – 1010011010 Jun 25 '15 at 21:21
• @1010011010 Did you succed in making it work? – student Jul 11 '15 at 16:59
• equations in system can be numbered automatically – touhami Jul 21 '15 at 23:06
• For automatically numbered equations Roman number try \uppercase\expandafter{\romannumeral*} – Salim Bou Jul 22 '15 at 8:33

Here a workaround, we can change the position of numbering with \syscodeextracol