Alignment problem when using gather with multicol

Question

I have an alignment problem similar to that which is found in this question. But using column break did not solve my problem as it did in this question.
I guess I could try align, but it would be annoying to rewrite everything in this new format. Is there a way to adapt this code to ensure the alignment is acceptable?
Here is some example code:
documentclass{article}
usepackage[utf8]{inputenc}

usepackage{multicol}
usepackage{amsmath}

begin{document}

begin{multicols}{2}
subsubsection*{Omaha}
begin{gather*}
F = FB neq textbf{MB = MBS} 
M = textbf{MZ = MBD }neq FZ 
B = MZS = FBS neq FZS 
Z = MZD = FBD neq FZD 
end{gather*}
columnbreak
subsubsection*{Crow}
begin{gather*}
F = textbf{FB = FZS} neq MB 
M = MZ neq textbf{FZ = FZD} 
B = FBS = MZS neq MBS 
Z = FBD = MZD neq MBD 
end{gather*}
end{multicols}

end{document}

Boubou0909 · Answer

You can maybe use instead a tabular environnement with some minipages such like this :
begin{tabular}{p{.5textwidth}p{.5textwidth}}
    begin{minipage}{1textwidth}
        subsubsection*{Omaha}
        $
        F = FB neq textbf{MB = MBS} 
        M = textbf{MZ = MBD }neq FZ 
        B = MZS = FBS neq FZS 
        Z = MZD = FBD neq FZD 
        $
    end{minipage}
    &
    begin{minipage}{1textwidth}
        subsubsection*{Crow}
        $
        F = textbf{FB = FZS} neq MB 
        M = MZ neq textbf{FZ = FZD} 
        B = FBS = MZS neq MBS 
        Z = FBD = MZD neq MBD 
        $
    end{minipage}  
end{tabular}

Zarko · Answer

With use of the tabularx table instead of the multicol environment:

(red lines show text borders)
documentclass{article}
%---------------- show page layout. don't use in a real document!
usepackage{showframe}
renewcommandShowFrameLinethickness{0.15pt}
renewcommand*ShowFrameColor{color{red}}
%---------------------------------------------------------------%

usepackage{tabularx}
usepackage{amsmath}

begin{document}

noindent%
begin{tabularx}{linewidth}{@{} X @{} X @{}}
subsubsection*{Omaha}
begin{gather*}
F = FB neq mathbf{MB = MBS} 
M = mathbf{MZ = MBD }neq FZ 
B = MZS = FBS neq FZS 
Z = MZD = FBD neq FZD
end{gather*}
    &
subsubsection*{Crow}
begin{gather*}
F = mathbf{FB = FZS} neq MB 
M = MZ neq mathbf{FZ = FZD} 
B = FBS = MZS neq MBS 
Z = FBD = MZD neq MBD
end{gather*}
end{tabularx}
or

noindent%
begin{tabularx}{linewidth}{@{} X @{} X @{}}
subsubsection*{Omaha}
[begin{aligned}
F & = FB neq mathbf{MB = MBS} 
M & = mathbf{MZ = MBD }neq FZ 
B & = MZS = FBS neq FZS 
Z & = MZD = FBD neq FZD
end{aligned}]
    &
subsubsection*{Crow}
[begin{aligned}
F & = mathbf{FB = FZS} neq MB 
M & = MZ neq mathbf{FZ = FZD} 
B & = FBS = MZS neq MBS 
Z & = FBD = MZD neq MBD
end{aligned}]
end{tabularx}

end{document}

Alignment problem when using gather with multicol

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