I trying to align a programming model using eqnarray but the command \tag do not work with it, I could use align instead but the alignment is right for the first column and left for the second column.
So what I want to do is use the eqnarray alignment (which is right for the first column and centered for the second column) with align.
This is how both commands look like:
=
sign (or<
or …) between the two ‘columns’? – Bernard Aug 27 '18 at 0:23