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I can't find a way to write a multi-line equation, which I would later refer to as on single equation, and write comments on some of rows.

The thing I want is pretty much like here:

Multi-row text comment in align environment

and here:

Show equation number only once in align environment

Is it possible to combine these?

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1 Answer 1

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2

Instead of align, you may use aligned within an equation environment.

Code

\documentclass{article} \usepackage{amsmath} \begin{document} \begin{equation}\label{my eq} \begin{aligned} a&=b+c &&\text{note 1} \\ &=d+e+f&&\text{note 2} \end{aligned} \end{equation} I wrote \eqref{my eq}. \end{document}

Output

enter image description here

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