1. Work through the simplex method step by step in tabular form to solve the followingproblem. Мaximize Z-2x1 - х2 + Хз, subject to x_{1}-x_{2}+3 x_{3} \leq 4 2 x_{1}+x_{2} \leq 10 x_{1}-x_{2}-\quad x_{3} \leq 7 and x_{1} \geq 0, \quad x_{2} \geq 0, \quad x_{3} \geq 0

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