I am using Soul to mark the change to my manuscript in Overleaf, but it won't work for equations, like
\documentclass[12pt]{article}
\usepackage{soul}
\setstcolor{red}
\begin{document}
\begin{equation}
\st{E = mc^3} E=mc^2
\end{equation}
\end{document}
what I want to see is an overstrike on E = mc^3, followed by E = mc^2
Thanks