Since all linear programming models must contain nonnegativity constraints, Solver will automatically include them and it is not necessary to add them to a formulation.

Question

Quizplus · Accepted Answer

While Solver assumes variables are non-negative by default, it is important to explicitly include nonnegativity constraints if the problem requires variables that can take negative values, or to adjust settings if non-negativity is not assumed.

Since All Linear Programming Models Must Contain Nonnegativity Constraints, Solver