Solve the following by inspection (using graph), and justify the method of solution in terms of the basic solutions of the simplex method. Maximize z = 5x, – 6x2 + 3x3 – 5x4 + 12x5 subject to x1 + 3x2 + 5x3 + 6x4 + 3x5 < 90 X1,X2, X3, X4, Xs 2 0

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