Math & Science ⇒ Non-aligned Equation in 'align' Environment

[maxmax]

Hi,

is there any way of excluding a single line in the align environment from being aligned with the others? This question might sound strange, but let me explain...
It should look like:

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a1=b1    c1=d1    e1=f1
a2=b2    c2=d2    e2=f2
a2=a+b+c+d+e+f+g+h=b2
a3=b3    c3=d3    e3=f3

The problem is when i do the following

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\documentclass[a4paper,10pt]{article}
\usepackage[utf8x]{inputenc}
\usepackage{amsmath}
\begin{document}
  \begin{align*}
    a1&=b1    &c1&=d1    &e1&=f1\\
    a2&=b2    &c2&=d2    &e2&=f2\\
    a2&=a+b+c+d+e+f+g+h=b2  &&&&\\
    a3&=b3    &c3&=d3    &e3&=f3
  \end{align*}
\end{document}

it looks like

Code: Select all

a1=b1                    c1=d1    e1=f1
a2=b2                    c2=d2    e2=f2
a2=a+b+c+d+e+f+g+h=b2
a3=b3                    c3=d3    e3=f3

If i split the equations into one align- followed by one equation- followed by one align-environment, the equations of the two different align environments are naturally not aligned with each other (unlike they all have the same size).

Any ideas?

[localghost]

Load the mathtools package instead and use its \mathrlap command to get the desired result.

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\documentclass[11pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage{mathtools}   % loads »amsmath«

\begin{document}
  \begin{align*}
    a1 &=b1    &c1&=d1    &e1&=f1\\
    a2 &=b2    &c2&=d2    &e2&=f2\\
    a2 &=\mathrlap{a+b+c+d+e+f+g+h=b2} \\
    a3 &=b3    &c3&=d3    &e3&=f3
  \end{align*}
\end{document}

For details refer to the package manual. You can find more useful stuff about math typesetting in the excellent »Math mode« document.


Thorsten

[maxmax]

This is, again, exactly what i was looking for.

Vielen Dank!

Max