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\begin{alignnat}
{\rm Minimize}\ Z^1 = (750,800,850)x_1\oplus (48,50,55) x_2\oplus \ldots \oplus 
(1900,2000,2100)x_{29}\oplus (220,230,240)x_{30} \nonumber \\
 {\rm Minimize}\ Z^2 = (0.1, 0.2,0.3) x_1\oplus (2.3,3.3,4.3)x_2\oplus \ldots \oplus
 (0,0,0)x_{29} \oplus (0,0,0)x_{30} \nonumber\\
{\rm subject \ to} \hfill \refstepcounter{equation}(\theequation) \\
(95,97,98)x_1\oplus(262,266,267)x_2 \oplus \ldots \oplus  (300,304,306)x_{29} \oplus (385,387,390)x_{30} \geq (1800,1900,2000) \nonumber \\
(21.1,21.1,22)x_1\oplus (48,50.2,52)x_2\oplus \ldots \oplus  (0,0,0)x_{29} \oplus(99,100,101)  x_{30} \geq (190,195,200) \nonumber \\
\vdots \nonumber \\
(8,10,12) x_1\oplus (98,100,102)x_2 \oplus \ldots \oplus (0.3,0.5,0.6)x_{29}\oplus(0,0,0)x_{30} \geq (3400,3500,3600) \hspace*{2cm}\nonumber 
\end{alignnat}
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