Math & Science ⇒ Alignment of equations

[jaybz]

How can I produce this. Note the equations should be centered on the page and everything should be very tight vertically and the numbering is every-other odd number.

Code: Select all

1. We have:
                       x + 2 = 1
                           x = -1
5. By theorem 3.2:
                       y + 4 = 7
                           y = 3   

[Stefan Kottwitz]

Hi jaybz,

use align* for centered aligned equations, \intertext for text between, keeping the alignment. Lenghts may be adjusted as desired.
A small example:

Code: Select all

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\setlength{\abovedisplayskip}{0pt}
\setlength{\abovedisplayshortskip}{0pt}
\setlength{\belowdisplayskip}{0pt}
\setlength{\belowdisplayshortskip}{0pt}
\begin{align*}
\intertext{1. We have:}
  x + 2 &= 1 \\
  x &= -1 \\
\intertext{5. By theorem 3.2:}
  y + 4 &= 7 \\
  y &= 3  
\end{align*}
\end{document}

You could create your own environment for that, especially regarding the spacing.

Stefan

[jaybz]

Thank very much.