[Tex/LaTex] Align an array to the top inside enumerate

#enumeratealign

I would like to align a system of 2 equations to the top of a label. Without the bracket (which I intend to use as shown in a), using the [t] option seems to work (see b). Can somebody help?

\documentclass[a4paper,DIV=15,oneside,12pt]{scrartcl}
\usepackage[ngerman]{babel} 
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc} 
\usepackage{amsmath}
\usepackage{enumitem}

\begin{document}
\begin{enumerate}[leftmargin=*,label=\alph{*}),itemsep=4pt]
\item $\left\{
\begin{array}[t]{rcl}
3x-2y & = & 7\\
x+2y & = & 5    
\end{array}
\right.$
\item $
\begin{array}[t]{rcl}
3x-2y & = & 7\\
x+2y & = & 5    
\end{array}
$
\end{enumerate}
\end{document}

Best Answer

Also, without additional packages, by \raisebox{-.5\baselineskip} like this:

enter image description here

\documentclass[a4paper,DIV=15,oneside,12pt]{scrartcl}
\usepackage[ngerman]{babel} 
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc} 
\usepackage{amsmath}
\usepackage{enumitem}
\begin{document}

\begin{enumerate}[leftmargin=*,label=\alph{*}),itemsep=4pt]
\item \raisebox{-.5\baselineskip}{%
$\left\{
\begin{array}{rcl}
3x-2y & = & 7\\
x +2y & = & 5    
\end{array}\right.
$
}
\item $
\begin{array}[t]{rcl}
3x-2y & = & 7\\
x +2y & = & 5    
\end{array}
$
\end{enumerate}

\end{document}
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