Equal space between numerator and denominator in fraction

Question

I'm working on a school book that requires spacing between numerator and denominator to be of equal size. Is it possible to achieve this in LaTeX.

Answer 1

Actually, they are already the same height, except for the unused space below and above.

\documentclass{article}
\usepackage{amsmath}

\newcommand{\myfrac}[2]% #1=numerator, #2=denominator
{\frac{\vphantom{#2}#1}{\vphantom{#1}#2}}

\begin{document}
\begin{equation}\fboxsep=0pt
\fbox{$\displaystyle \frac{A^2_0}{x}$} \fbox{$\displaystyle \myfrac{A^2_0}{x}$}
\end{equation}
\end{document}