TeX source:

\begin{aligned} \min \mathrm{Z}_{1} &=P S M T C+P W M T C+P R W T C+P W M T C+P W C T C+T M S T C \\ &+T S W T C+T W R T C+T R M T C+I W T C+I M T C+F G T C \\ &+F C T C \end{aligned}