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Hi,

I would like to add a single left brace over the two lines of the following system, while keeping the separate numbering of each line but I have not managed yet.
\begin{eqnarray}
&&\log w_{i} =
C_{i}\, a_{1}+ F_{j(i)}\, a_{2}+L_{c(i)s(j(i))}\, a_{3}+\delta_{c(i)}+\varepsilon_{i}\label{eq ...