Take the 2-minute tour ×  I need to typeset two columns of
equations, each row typeset with an equation number to the right
as with an ordinary equation. The first column must be centered,
and the second column must be left-aligned. There will be many
rows, so it must automatically break at a page break as
appropriate.  There are plenty of related questions, but I can't
find any existing solutions that will let me do exactly what I
want. (It's a real pain the align environment can't take
optional column alignment specifiers.)  share|improve this
question How are the equations going to be numbered? For
instance, will all equations in the left-hand column be numbered
independently from those in the right-hand column, or will they
share the same counter? –  Mico Dec 15 '11 at 21:04 The idea is
that each line would have one number, typeset to the right, like
an ordinary align environment. The only difference to align is
that instead of rl column alignment, I need cl column alignment.
–  Jamie Vicary Dec 15 '11 at