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## Problem with Equation Reference## LaTeX Forum: Math & ScienceAdd tags
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I tried to use the following commands
- Code: Select all • Open in online LaTeX editor
`\begin{equation}\label{xx} 3+4=7 \end{equation}` Referring to the equation \eqref{xx}
or - Code: Select all • Open in online LaTeX editor
`\begin{equation}3+4=7 \label{xx}\end{equation}` Referring to the equation \eqref{xx}
but it did not work... it worked just if instead of `\eqref{xx}` I wrote `\ref{xx}` . Why is it so? Should I use a particular package? N.B I am using Texniccenter and Mixtek as a compiler- beth87
**Posts:**6**Joined:**Sat Jun 11th, 2011
"It doesn't work" is an error description that is as good as useless. What is the exact error message from the log? As a random shot I would guess that you forgot to load the amsmath package.
Thorsten LaTeX Community Moderator
How to make a "Minimal Example" Board Rules Avoidable Mistakes ¹ System: openSUSE 13.1 (Linux 3.11.10), TeX Live 2013 (vanilla), TeXworks 0.5 (r1351) ² Posting stopped indefinitely due to offenses -
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**Posts:**9206**Joined:**Fri Feb 2nd, 2007**Location:**Braunschweig, Germany
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