# [OS X TeX] Aligning equations with comments

David Arnold dwarnold45 at suddenlink.net
Fri Mar 18 22:19:57 CET 2011

All,

Think I have it:

$$\begin{array}{rrrrr>{\hspace{1cm}}p{7cm}} 2x & + & 5y & = & 6 & \textcolor{red}{Now is the time for all good men.}\\ 3x & - & 4y & = & 12 & \textcolor{red}{Dark are the days}.\\\cmidrule{1-5} \end{array}$$

But I am still open to suggestion. Think this will work for me.

D.

On Mar 18, 2011, at 2:13 PM, David Arnold wrote:

> I've got something that almost works:
>
> $$> \begin{array}{rrrrrp{6cm}} > 2x & + & 5y & = & 6 & \textcolor{red}{Now is the time for all good men.}\\ > 3x & - & 4y & = & 12 & \textcolor{red}{Dark are the days}.\\\cline{1-5} > \end{array} >$$
>
> But when I try to separate the text from the math, my underline extends as well.
>
> $$> \begin{array}{rrrrr@{\hspace{1cm}}p{6cm}} > 2x & + & 5y & = & 6 & \textcolor{red}{Now is the time for all good men.}\\ > 3x & - & 4y & = & 12 & \textcolor{red}{Dark are the days}.\\\cline{1-5} > \end{array} >$$
>
> Anyone have a solution where I get get my underline to stop just after the 12?
>
> D.
>
>
>
> On Mar 18, 2011, at 1:26 PM, <leedwitt at gmail.com> wrote:
>
>> I need to align x-terms, operator, y-terms, equal sign, and right-hand sides in their own columns, while keeping my comment space to the right. I also need to underline that second equation before writing that third equation.
>> ++++++++++++++
>>
>> I've used hphantom commands to align x and y values before (one equation has 3x, use hphantom{3}x in the next line. Same thing for negatives to align right sides.
>>
>> I have no idea about the underlining.
>> Sent from my Verizon Wireless BlackBerry
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>
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