@Schrödinger'scat I'm sorry, the link I sent was just to show you how my code was. But that you helped a lot and I was trying to make it perfect. Even so I understand you and as I am a beginner, I am very grateful for your help nonetheless.
– Rony Deikson SantanaMay 12 '20 at 00:40
\usefonttheme[onlymath]{serif}to your preamble if you want the standard math font. – Adrián Delgado May 11 '20 at 19:21beamerspecfic ? – BambOo May 11 '20 at 19:56