I have some equations that span multiple lines. In the document, I have the following description environment:
\begin{description}
\item[(F1)]
$First Line \\$,
$Second Line \\$
$Third Line $
\end{description}
The effect that I am trying to achieve, is to indent the second line and third line as follows, but it does not work:
\begin{description}
\item[(F1)]
$First Line \\$,
\quad $Second Line \\$
\quad\quad $Third Line $
\end{description}
I have tried using \quad inside and outside the $$, but failed. Any advice is greatly appreciated.
P.S. The solutions suggested in How to indent second line of an item enumerate are not what I need. Also, I am not able to change any formatting commands. I need to do this simply by using something like \quad, \hspace.