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I have 3 related equations, two of them do not fit on a single line. I want to present them in a gather-environment, but how to do linebreaks inside equations? multline does not work inside gather.

In isolation, the equations would be typeset as follows:

\begin{equation} eq 1 \end{equation} 

\begin{multline} long \\ eq 2 \end{multline}

\begin{multline} long \\ eq 3 \end{multline}
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    do not use the equation environment, use align instead, then you can have linebreaks
    – user2478
    Dec 27, 2010 at 11:49

2 Answers 2

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The mathtools package has a multlined environment that relates to multline as aligned to align.

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4

You can use split within gather.

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