leave equation number normal size for large equation

Question

I want to increase font size in math. formula in latex document, but leave the equation number normalsize.

Answer 1

You can load mathtools and add to your preamble

\renewtagform{default}{\normalsize(}{)}
\usetagform{default}

Example:

 \begin{equation}
   a = b + c
 \end{equation}

\LARGE
 
 \begin{equation}
   a = b + c
 \end{equation}