5

I want to write such equation:enter image description here .

However, I don't know how to write second equality here (a=12). Actually, it is not even an equality, it is some kind of a pointer that was placed above. How to do it?

P.S. The closest thing to what I need is \cancelto{}{} enter image description here,

but I don't need the arrow, I need "=".

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1 Answer 1

Reset to default
12 
\documentclass{article}
\usepackage{rotating}
\newcommand\equalscript[1]{\rotatebox[origin=bottom]{40}{$\scriptscriptstyle=$}^{\!#1}}
\begin{document}
\[
x = 4\cdot a^{\equalscript{12}}
\]
\end{document}

enter image description here

If one prefers not having to type out the superscript ^ invocation each time, then this:

\documentclass{article}
\usepackage{rotating}
\newcommand\equalscript[1]{^{\rotatebox[origin=bottom]{40}{$\scriptscriptstyle=$}^{\!#1}}}
\begin{document}
\[
x = 4\cdot a\equalscript{12}
\]
\end{document}
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