s.t. Problem 2. Consider the following standard LP. max 2x: + 3x2 2x1 + x2 + x3 = 16 X: + 3xx - x = 20 Xy + x2 = 10 X1, X, 20 1 s.t. Use big M method to solve this LP by adding TWO artificial variables as follows max 2x1 + 3x2 - M(a2 + a3) 2x + x2 + x3 = 16 *1 + 3x2 - X + a2 = 20 X2 + x2 + ay = 10 X1, X, 22, 23 20 (25 points)