solve by using the Two-Phase Simplex Method

5. Consider the following set of constraints: X1 + X2 + X3 = 7 2x1-5x2 + x, 10 Solve the problem for each of the following objective functions: (a) Maximize z = 2x1 + 3x2-5x3. (b) Minimize z -2x 3x2 -5x3 (c) Maximize z = xi + 2x2 + x3. (d) Minimize z = 4x1-8x2 + 3x3- 5. Consider the following set of constraints: X1 + X2 + X3 = 7 2x1-5x2 + x, 10 Solve the problem for each of the following objective functions: (a) Maximize z = 2x1 + 3x2-5x3. (b) Minimize z -2x 3x2 -5x3 (c) Maximize z = xi + 2x2 + x3. (d) Minimize z = 4x1-8x2 + 3x3