Way to tile numbered equations

Question

New to the LATEX and am not tempted at this at all. Honestly tried to find the solution for my task anywhere but, to the best of my understanding, there is no topic here which covers the solution of the like problem.
Problem itself is to find a way of tiling up the six numbered equations, numbers shall be on the left, grouped as 3 × 2, i. e.:
(1) equation1 (4) equation4
(2) equation2 (5) equation5
(3) equation3 (6) equation6.
Code for those equations1--6 is:
documentclass{article}
usepackage{amsmath,amsfonts,amssymb}
begin{document}
...
begin{eqnarray}
frac{partial P}{partial L} = frac34 frac{P}{L}
frac{partial P}{partial C} = frac14 frac{P}{C}
frac{Lpartial P}{partial L} = frac34 P
frac{Cpartial P}{partial C} = frac14 P
frac{partial , {ln P}}{partial , {ln L}} = frac34
frac{partial , {ln P}}{partial , {ln C}} = frac14
end{eqnarray}
end{document}

Please can anyone help with this?
Thank very much in advance!

Mico · Accepted Answer

I can think of two solutions. First, you could place an align environment with all six equations in a two-column multicols environment. Second, you could place two separate align environments, each with three equations, in separate minipage environments of width 0.5textwidth.
Either way, you should specify the document class option leqno to tell LaTeX to place the equation numbers on the left.
If you don't need alignment on the = symbols, I suggest you use gather rather than align environments.

documentclass[leqno]{article}  % equation numbers on left
usepackage{amsmath}   % for 'align' env.
allowdisplaybreaks    % allow column breaks and page breaks
usepackage{multicol}  % for 'multicols' env.

begin{document}

begin{multicols}{2}
noindent
begin{align}
frac{partial P}{partial L} &= frac34 frac{P}{L}
frac{partial P}{partial C} &= frac14 frac{P}{C}
frac{L,partial P}{partial L} &= frac34 P 
frac{C,partial P}{partial C} &= frac14 P 
frac{partial ln P}{partial ln L} &= frac34
frac{partial ln P}{partial ln C} &= frac14
end{align}
end{multicols}

noindent
begin{minipage}{0.5textwidth}
begin{align}
frac{partial P}{partial L}    &= frac34 frac{P}{L}
frac{partial P}{partial C}    &= frac14 frac{P}{C}
frac{L,partial P}{partial L} &= frac34 P
end{align}
end{minipage}%
begin{minipage}{0.5textwidth}
begin{align}
frac{C,partial P}{partial C}      &= frac14 P
frac{partial ln P}{partial ln L} &= frac34
frac{partial ln P}{partial ln C} &= frac14
end{align}
end{minipage}
end{document}

Way to tile numbered equations

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