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I'm trying to have an equation as the first line of one of my items in an enumerate environment.

Example:

\begin{enumerate}
  \item \[ x \]
\end{enumerate}

misaligned equation in enumerate

I want the $x$ to have the same baseline as the 1., but it's appearing lower. How can I make the two line up properly?

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then use it this way: $x$ –  Herbert Jan 20 '11 at 21:23
    
I want a displayed equation that needs to be centered; using text-mode math doesn't actually help me. –  Ben Alpert Jan 20 '11 at 21:24
    
I guess this is a duplicate: tex.stackexchange.com/questions/3109/… –  Hendrik Vogt Jan 20 '11 at 22:20

1 Answer 1

up vote 3 down vote accepted
\documentclass[12pt]{article}

\begin{document}

\begin{enumerate}
  \item \parbox{\linewidth}{\vspace{-\abovedisplayskip}%
                \[ x \]}
  \item \hfill $ x $ \hfill~
\end{enumerate}

\end{document}

doesn't really make sense, from my point of view.

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This actually works perfectly if you take out the \vspace to leave just \parbox{\linewidth}{\[ ... \]}. (I'm not sure why). –  Ben Alpert Jan 20 '11 at 21:40
    
@Ben Alpert: If you think of a \parbox as a self-contained paragraph-making environment (in effect, a mini page, though not a minipage), you will see that the displayed equation need not start a new line at the top of one. –  Ryan Reich Jan 20 '11 at 22:19
    
This actually turned out not to work as well as I thought it did; see tex.stackexchange.com/questions/9394/…. –  Ben Alpert Jan 21 '11 at 3:44
    
I assume the hfill for the second \item was to show the horizontal placement of the x, in which case \item ~\hfill $ x $ \hfill~ is slightly better. Not a big deal, but I was initially confused as to why the two x were not horizontally aligned. –  Peter Grill Feb 7 '13 at 23:05

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