## LaTeX forum ⇒ Math & Science ⇒ Problem with equations on left side. Topic is solved

Information and discussion about LaTeX's math and science related features (e.g. formulas, graphs).
Cham
Posts: 894
Joined: Sat Apr 02, 2011 4:06 pm

### Problem with equations on left side.

I'm having a problem in trying to flush left some aligned equations in this small document. Here's a MWE code to play with :
\documentclass[11pt]{scrartcl}\usepackage[T1]{fontenc}\usepackage{amsmath}\begin{document}\section*{Title} Blabla bla bla bla. \medskip \begin{enumerate}	\item Blabla bla :		\begin{equation*}			x^2 - a x = 0.		\end{equation*}		\hfill Answer :  $x = \tfrac{5}{6}$	\medskip	\item Solve these :		\medskip		\begin{enumerate}			\item				\begin{flalign*}					2 x + y &= 4, \\[6pt]					x - 2 y &= -\, 3.				\end{flalign*}				\hfill Answer :  $x = 1$ and $y = 2$			\medskip			\item				\begin{flalign*}					3 x - 2 y &= -\, 7, \\[6pt]					-\, 2 x + 3 y &= 3.				\end{flalign*}				\hfill Answer :  $x = -\, 3$ and $y = -\, 1$		\end{enumerate}\end{enumerate}\end{document}

Preview :
leftside.jpg (16.42 KiB) Viewed 245 times

As shown in red above, I need to place the aligned equations on the left side, without changing the first equation (centered). The "flalign" environment doesn't seem to work here, why ? How to do that, without adding the option fleqn to the document class ?

Cham
Posts: 894
Joined: Sat Apr 02, 2011 4:06 pm
Doh ! I just refound the solution, to what was already a solved issue before. Just add a & at the end of some equations :
\documentclass[11pt]{scrartcl}\usepackage[T1]{fontenc}\usepackage{amsmath}\begin{document}\section*{Title} Blabla bla bla bla. \medskip \begin{enumerate}	\item Blabla bla :		\begin{equation*}			x^2 - a x = 0.		\end{equation*}		\hfill Answer :  $x = \tfrac{5}{6}$	\medskip	\item Solve these :		\medskip		\begin{enumerate}			\item				\begin{flalign*}					2 x + y &= 4, & \\[6pt]					x - 2 y &= -\, 3.				\end{flalign*}				\hfill Answer :  $x = 1$ and $y = 2$			\medskip			\item				\begin{flalign*}					3 x - 2 y &= -\, 7, & \\[6pt]					-\, 2 x + 3 y &= 3.				\end{flalign*}				\hfill Answer :  $x = -\, 3$ and $y = -\, 1$		\end{enumerate}\end{enumerate}\end{document}