# latex libreoffice preamble TexMaths extension [closed]

I am currently using the texmaths extension to insert latex formulas into a powerpoint presentation. (libreoffice impress). I have to use \usepackage{braket} for the equations to work. the problem is, each time I go back to modify an equation, I have to re-insert \usepackage{braket} in the preamble. Is there any way to fix this? another option could be to prepare the entire presentation in latex, never tried it..

this answer is related: How to insert LaTeX formulas in LibreOffice?