1

I'm having a little bit of trouble with using enumerate and align.

I'm trying to get this: enter image description here

But it is not working for me.

  • 1
    is it necessary to use \ref later to refer to any of these items? – barbara beeton Jul 14 '16 at 17:04
3

I think you're misusing the align and align* environments. Your material is more properly displayed using a basic tabular environment.

enter image description here

\documentclass{article}
\usepackage{amsmath}         % for '\text' macro
\usepackage{array}           % for '\newcolumntype' macro
\newcolumntype{L}{>{$}l<{$}} % math-mode 'l' column type
\begin{document}

\begin{center}
\renewcommand\arraystretch{1.5}
\begin{tabular}{lLl}
1. & x + y = y + x & Comutatividade da soma \\
2. & (x + y) + z = x + (y + z) & Associatividade da soma\\
3. & \exists e\in A\text{ tal que $x + e = x$ para todo $x$} & Elemento neutro da soma\\
\end{tabular}
\end{center}
\end{document}
1

What about this?

\documentclass{article}

\usepackage{amsmath}

\begin{document}


\begin{align*}
  1. \, & x + y = y + x && \text{Comutatividade da soma} \\
  2. \, & (x + y) + z = x + (y + z) && \text{Associatividade da soma}\\
  3. \, & \exists e \in A \text{ tal que } x + e = x \text{ para todo } x && \text{Elemento neutro da soma}
\end{align*}

\end{document}

enter image description here

  • 1
    I would add \hspace{\labelsep} rather than \, to emulate the skip of a real list. – Bernard Jul 14 '16 at 16:47

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