[texhax] fbox in align environment

E. Krishnan ekmath at asianetindia.com
Tue Jun 16 02:18:25 CEST 2009

On Sun, 14 Jun 2009, Sebastian Canagaratna wrote:

> Say you have three equations in an align environment. You want to box
> only one of them, say the last one. How does one do this?

Please check whether this meets your needs:


       x+y+2    & = & 1\\
       2x+3y-4z & = & 2\\
       & \multicolumn{1}{c@{\;}}{=}
       & \multicolumn{1}{r@{\;}|}{3}\\


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