# [Tex/LaTex] Error with \framebox inside $$errors I'm new to LaTeX, and I'm having an issue with using \framebox inside an equation (denoted with $$ signs at the beginning and the end).

The text that I'm trying to box is the following:

1.5 \times 10^{- 5} \; Pa


However, once I put a \framebox around it, like so:

\framebox{1.5 \times 10^{- 5} \; Pa}


I get the following error:

./assignment1.tex:85: Missing inserted. …where 85 points to the line where I put in the \framebox. Any ideas why this is happening? #### Best Answer boxed will not span an equation if it encloses an alignment point i.e., & . In such cases you can use Aboxed from mathtools. See the example below for illustration. Further, to typeset units, better use siunitx. \documentclass{article} \usepackage{mathtools} \usepackage{siunitx} \begin{document} \framebox{1.5 \times 10^{- 5}\si{\pascal}\$}
\begin{align}
&\boxed{1.5 \times 10^{- 5}\si{\pascal}}\\
\Aboxed{\text{Pressure} &=1.5 \times 10^{- 5}\si{\pascal}}
\end{align}
\end{document}


A useful read will be this Q and its A