# [OS X TeX] Aligning equations with comments

Fri Mar 18 22:13:43 CET 2011

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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