Is there an option for equal spacing between equations with and without fractions?
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{section}{title}
text
\begin{gather}
a + b + \frac{1}{2} = 1 \\
a + b + \frac{1}{2} = 1 \\
a + b + c = 1 \\
a + b + c = 1
\end{gather}
\end{section}
\end{document}
\tfrac
instead of\frac
rather than increase the spacing\section{Title}
instead of\begin{section}...\end{section}
\begin{section}
? The only difference I know of is it adds its own grouping, which may not be a bad thing. And my (very limited) understanding is if that were the default, then tagging a pdf would be a slightly easier task.