Cfrgtkky

I am trying to create two tables and put them beside each other. Each table should shrink to the rectangle shown in green while maintaining the aspect ratio. However, it does not seem that this is the case. Replacing the table with a blind text seems to work well.

documentclass[aspectratio=169, xcolor={x11names}]{beamer}



    usecolortheme{seahorse}

    useoutertheme{miniframes}

    useinnertheme{inmargin}



    usepackage{adjustbox}

    usepackage{ragged2e}



    % ========== Table packages ==========

    usepackage{booktabs}

    usepackage{makecell}

    usepackage{multirow}



    % ========== Equations and math packages ==========

    usepackage{amsmath}

    usepackage{amssymb, amsfonts}





    usepackage[defaultmathsizes, subdued, italic, symbolre, symbolmisc]{mathastext}

% BEGIN_FOLD



MTDeclareVersion[it]{charter}{T1}{bch}{m}{n}



AtBeginDocument{MTversion*{charter}}





% END_FOLD





    % Set margins

    newlength{widthTextMarginLeftPageWide}

    setlength{widthTextMarginLeftPageWide}{5mm}

    newlength{widthTextMarginRightPageWide}

    setlength{widthTextMarginRightPageWide}{5mm}



    % Command to change margins for a page wide

    makeatletter

    newcommand{framePageWide}{

        defGm@lmargin{widthTextMarginLeftPageWide}%

        defGm@rmargin{widthTextMarginRightPageWide}%

        textwidth=dimexprpaperwidth-Gm@lmargin-Gm@rmarginrelax

        hsizetextwidth

        columnwidthtextwidth

        hoffset=dimexpr-beamer@leftsidebar+Gm@lmargin-widthTextMarginLeftPageWiderelax

    }

    makeatother



begin{document}



newcolumntype{q}[1]{>{raggedright arraybackslashhspace{0pt}}m{#1}}

newcolumntype{w}[1]{>{centering arraybackslashhspace{0pt}}m{#1}}

newcolumntype{e}[1]{>{raggedleft arraybackslashhspace{0pt}}m{#1}}



{framePageWide



begin{frame}{Results}



    begin{adjustbox}{minipage={0.45textwidth}, max totalsize={0.45textwidth}{!}, cframe=SpringGreen3 0.3mm}



        begin{tabular}{w{2cm} @{extracolsep{1mm}}|w{1.5cm} w{1.5cm} w{1.5cm}}



            toprule



            multirow{3}{=}{centering System Size} & multicolumn{3}{c}{Time Needed With Our Approach}

            \



            & multicolumn{3}{c}{(Extended Brown's Method)}

            \

            Xcline{2-4}{0.25mm}



            & min & mean & max

            \

            Xhline{0.25mm}



            200-bus & $3times10^{-6}$ & $4.3times10^{-6}$ & $5times10^{-6}$

            \



            2383-bus & $3times10^{-6}$ & $3.8times10^{-6}$ & $6times10^{-6}$

            \



            3120-bus & $3times10^{-6}$ & $3.2times10^{-6}$ & $4times10^{-6}$

            \



            bottomrule



        end{tabular}



    end{adjustbox}

    hfill

    begin{adjustbox}{minipage={0.45textwidth}, max totalsize={0.45textwidth}{!}, cframe=SpringGreen3 0.3mm}



        begin{tabular}{w{2cm} @{extracolsep{1mm}}|w{1.5cm} w{1.5cm} w{1.5cm}}



            toprule



            multirow{3}{=}{centering System Size} & multicolumn{3}{c}{Time Needed With}

            \



            & multicolumn{3}{c}{Conventional Brown's Method}

            \

            Xcline{2-4}{0.25mm}



            & min & mean & max

            \

            Xhline{0.25mm}



            200-bus & $0.089$ & $0.092$ & $0.1000$

            \



            2383-bus & $163.8$ & $166.2$ & $172.5$

            \



            3120-bus & $387.2$ & $398.8$ & $415.6$

            \



            bottomrule



        end{tabular}



    end{adjustbox}



end{frame}



}







end{document}

i would redesign your tables as follows:

• remove first column in the second table


• remove hfill between tables


• use S column type from siunitx package


• for tables use tabularx

documentclass[aspectratio=169, xcolor={x11names}]{beamer}

    usecolortheme{seahorse}

    useoutertheme{miniframes}

    useinnertheme{inmargin}

usepackage{siunitx}

usepackage{ragged2e}

% ========== Table packages ==========

usepackage{booktabs}

usepackage{makecell}

usepackage{multirow}

usepackage{tabularx}

    newcommandmcx[1]{multicolumn{1}{>{centeringarraybackslash}X}{#1}}

% ========== Equations and math packages ==========

usepackage{amsmath}

usepackage{amssymb}

usepackage[defaultmathsizes, subdued, italic, symbolre, symbolmisc]{mathastext}

% BEGIN_FOLD

MTDeclareVersion[it]{charter}{T1}{bch}{m}{n}

AtBeginDocument{MTversion*{charter}}



begin{document}

begin{frame}{Results}

    small

    begin{tabularx}{0.55linewidth}{@{} p{3.8em}

                                        S[table-format=1.0e1]

                                        S[table-format=1.1e1]

                                        S[table-format=1.0e1]

                                    @{} }

    toprule

multirow{3}{=}{centering System Size}

    & multicolumn{3}{c}{makecell{Time Needed\

                                   With Our Approach\

                                   (Extended Brown's Method)}}  \

    cmidrule(lr){2-4}

    & mcx{min} & mcx{mean} & mcx{max}

            \

    midrule

 200-bus &  3e6  &   4.3e6    &   5e6   \

2383-bus &  3e6  &   3.8e6    &   6e6   \

3120-bus &  3e6  &   3.2e6    &   4e6   \

    bottomrule

    end{tabularx}begin{tabularx}{0.4linewidth}{@{}

                                        S[table-format=3.3]

                                        S[table-format=3.3]

                                        S[table-format=3.3]

                                                @{} }

    toprule

multicolumn{3}{c}{makecell{Time Needed\

                             With Conventional\

                             Brown's Method}} \

    cmidrule(lr){1-3}

mcx{min} & mcx{mean} & mcx{max}

            \

    midrule

0.089   &   0.092   &   0.100   \

163.8   &   166.2   &   172.5   \

387.2   &   398.8   &   415.6   \

    bottomrule

    end{tabularx}

end{frame}

end{document}

Here's another suggestion for combining the two tables into a single table. It uses a tabular* environment, with width set to textwidth. The S column type of the siunitx package is employed to format and align the numeric cells. I'd also make the frame title a lot more descriptive.

documentclass[aspectratio=169, xcolor={x11names}]{beamer}

    usecolortheme{seahorse}

    useoutertheme{miniframes}

    %useinnertheme{inmargin}



usepackage{ragged2e,booktabs,array}

usepackage{amsmath,amssymb,siunitx}



begin{document}



begin{frame}{Times needed with extended and conventional Brown's methods}

sisetup{exponent-product=cdot}

setlengthtabcolsep{0pt}

begin{tabular*}{textwidth}{@{extracolsep{fill}}

        l S[table-format=1e-1]

        S[table-format=1.1e-1]

        S[table-format=1e-1]

   *{3}{S[table-format=3.3]} }



toprule

System Size  & multicolumn{6}{c}{Times needed with dots} \

cmidrule{2-7}

& multicolumn{3}{c}{Ext. Brown's Method}

& multicolumn{3}{c}{Conv. Brown's Method}\

& multicolumn{3}{c}{(Our Method)}\

cmidrule{2-4} cmidrule{5-7}

& {min} & {mean} & {max} & {min} & {mean} & {max} \

midrule

phantom{2}200-bus 

         & 3e-6 & 4.3e-6 & 5e-6 & 0.089 & 0.092 & 0.100 \

2383-bus & 3e-6 & 3.8e-6 & 6e-6 & 163.8 & 166.2 & 172.5 \

3120-bus & 3e-6 & 3.2e-6 & 4e-6 & 387.2 & 398.8 & 415.6 \

bottomrule

end{tabular*}



end{frame}

end{document}