Hi. I've tried thousand ways to translate my equations to my moodle institute forum but I just get weird symbols. I'm not trying to translate 5+2.. I'm using matrices, determinants, arrows, etc. I've tried Tex, LaTeX, AMSTex, Moodle Filter, but I get translation error because of an arrow.

$$\begin{gathered}

\left| {\begin{array}{*{20}{c}}

{a + 5c}&{3b}&c \\

{d + 5f}&{3e}&f \\

{2g + 10i}&{6h}&{2i}

\end{array}} \right|\xrightarrow{{Traspuesta}}\left| {\begin{array}{*{20}{c}}

{a + 5c}&{d + 5f}&{2g + 10i} \\

{3b}&{3e}&{6h} \\

c&f&{2i}

\end{array}} \right|\xrightarrow{{ - 5{F_3}}}\left| {\begin{array}{*{20}{c}}

a&d&{2g} \\

{3b}&{3e}&{6h} \\

c&f&{2i}

\end{array}} \right|\xrightarrow{{{F_2} \div 3}} \hfill \\

3 \div \left| {\begin{array}{*{20}{c}}

a&d&{2g} \\

b&e&{2h} \\

c&f&{2i}

\end{array}} \right|\xrightarrow{{Traspuesta}}3 \div \left| {\begin{array}{*{20}{c}}

a&b&c \\

d&e&f \\

{2g}&{2h}&{2i}

\end{array}} \right|\xrightarrow{{{F_3} \div 2}}2 \div \left( {3 \div 5} \right) \hfill \\

\end{gathered} $$

Any help is much appreciated

EDIT: See how it looks here? There are two weird symbols that shouldn't be at the beggining... I used AMSLatex, but it's just irritating! FOR ONE forum I have to use this, in other forum I use ButterflyLatex, in the other CrocodileLatex, my god! Isn't there just 1 which works for all???