Use the technique developed in this section to solve the minimization problem. C = x - 7y + z 2y + 3z ≤ 30 y 2z ≤ 45 y + 3z ≤ 60 x ≥ 0, y ≥ 0, z ≥ 0 Minimize subject to The minimum is C = X 2x + 2x + at (x, y, z) =

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