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Maximize: Z = -x + 2y, subject to the ...

Maximize:
`Z = -x + 2y`, subject to the constraints:
`x ge 3, x + y ge 5, x + 2y ge 6, y ge 0`.

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Maximise Z= -x + 2y , subject to the constraints: x ge 3, x + y ge 5, x + 2y ge 6, y ge 0 .

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