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L = 5x1 - 2x3 min
- 5x1 - x2 + 2x3 ≤ 2
- x 1+x3 + x4 ≤ 5
- 3x1 + 5x4 ≤ 7
x1, x2, x3, x4 A1:A4, a L - 1 = =5*A1-2*A3.
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2 = -5*A1 - A2 + 2*A3
3 = -1 +3 + 4
4 = -3*1 + 5*4.
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