Formatting/Equation numbering

[Hal Kierstead]

> There are two relevant document class options:
> 
> * "fleqn" (flush left equation), which aligns the equation to the left. Used by itself, though, it leaves the equation number on the right.
> 
> * "leqno" (left equation number), which puts the equation number on the left. Used by itself, it centers the equation still.
> 
> BUT, if you use BOTH options, then you get what you want.
> 
> How to do it in LyX? Look at Document> Settings> Document Class. The "Custom" field allows you to enter class options. In your case, you could enter "fleqn,leqno". Any class options can be entered here.
> 
> However, LyX also has native support for this under Document> Settings> Math Options. The Formula Numbering Side option is self-explanatory. You would want "Left". This adds "leqno" behind the scenes. The other one is the Indent Formulas checkbox. The tooltip explains what it does: It indents instead of centering equations. So you can check that. If you leave it at "Default", then it just adds "fleqn"; you can also, however, control the indent here by selecting "Custom" and entering a length (which gets set as the \mathindent).
> 
This excellent explanation was also very useful to me.

Thanks,

Hal