max 3x1 + x2 sc x1 - x2 ≤ -1 - x1 - x2 ≤ -3 2x1 + x2 ≤ 4 x1, x2 ≥ 0
max 3x1 + x2 sc x1 - x2 ≤ -1 - x1 - x2 ≤ -3 2x1 + x2 ≤ 2 x1, x2 ≥ 0
max 3x1 + x2 sc x1 - x2 ≤ -1 - x1 - x2 ≤ -3 2x1 - x2 ≤ 2 x1, x2 ≥ 0