basis z x1 x2 s1 s2 s3 sol
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z 1.00 -2.00 0.00 0.00 6.00 0.00 36.00
s1 0.00 1.00 0.00 1.00 0.00 0.00 4.00
x2 0.00 0.00 1.00 0.00 1.00 0.00 6.00
s3 0.00 4.00 0.00 0.00 -3.00 1.00 6.00