# Alignment margin note with equation in pages

It's my problem, I am not writing margin note in \equation and \align. It's an error. But it's working in text. My aim, margin note with equation must be aligned.

\definecolor{background}{RGB}{255,255,170}

% \begin{align} \colorbox{background}{\displaystyle{} R_A+R_B=\frac{R_3(R_1+R_2)}{R_1+R_2+R_3}}% \end{align}


odd page

even page

I'm sure this is a duplicate of another question that I just can't find. So, does anyone know how to fix it.

• Please complete your code snippet to a minimal working example (MWE) so we know which class your are using. – Andrew Swann Sep 1 '14 at 6:49
• Indeed, I am so sorry. Whereupon, I will observe. Thanks for your attention. – Özgür Sep 2 '14 at 0:56
• No problem, it is just a suggestion of how to improve your question so that you get a relevant answer (which now seems to be the case) and so it will be most helpful to others visiting the site in future. – Andrew Swann Sep 2 '14 at 11:45

You have better ways of colouring an equation. See for example: this question and its answers. I have used empheq in my example. With tcolorbox, you can be more fancier.

Now the real problem. The following code works with the help of marginnote package.

\documentclass{book}
\usepackage{mathtools}
\usepackage{xcolor}
\definecolor{background}{RGB}{255,255,170}
\usepackage{empheq}
\newcommand*\mybox[1]{%
\colorbox{background}{\hspace{1em}#1\hspace{1em}}}
\usepackage{kantlipsum}
\setlength{\marginparsep}{5mm}
\setlength{\marginparwidth}{1in}
\reversemarginpar
\begin{document}
\kant[1]
\begin{empheq}[box=\mybox]{align}
R_A+R_B &=\frac{R_3(R_1+R_2)}{R_1+R_2+R_3}\marginnote{Some margin note here}
\end{empheq}
\kant[2]
\clearpage
\kant[1]
\begin{empheq}[box=\mybox]{align}
R_A+R_B &=\frac{R_3(R_1+R_2)}{R_1+R_2+R_3}\marginnote{Some margin note here}
\end{empheq}
\kant[2]

\end{document}


As you didn't reveal the document class you are using, I have used book class. If you are using memoir, you may better use the native \marginpar command.

• "+1" Thanks for your answer. I worked very well.I don't this package. How [closed] this question? – Özgür Sep 2 '14 at 1:45
• @Özgür Glad it was helpful. Do you mean how to close this question? If so, You have already accepted the answer, hence the question is concluded. :-) – user11232 Sep 2 '14 at 1:53