8. The equations below arise from the simplex method tableau (at a particular iteration) when solving a maximization problem with constraints to which slack variables x4, x5, x6 were added to put into Ax = b form. The original RHS vector is b = (2,4,5); the original objective function coefficient vector is c = (8, 6, 3). Find the missing numbers. Justify your answer. z + x1 + X1 x2 + X3 +0 4 +0 5 +0 6 = 2x1 + x2 x3 + 3x4 + 0x5 x6 + - 3x1 + x2 +0x3 - 7x4 + x5 +0x6 = = 10 3x1 + x2 +0x3 + x4 +0x5 + 2x6 = = O