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Determine graphically the minimum value of the objective function `Z" "=" "" "50 x" "+" "20 y` . . .(1) subject to the constraints: `3x-ygeq-5` . . .(2) `3x+ygeq3` . . .(3) `2x-3jlt=12` . . .(4) `xgeq0,""""ygeq0` . . .(5)

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