Convert the given i-system to an e-system using slack variables. Then construct a table of all basic solutions of the e-system. For each basic solution, indicate whether or not it is feasible. 8x1 +7x2 ≤ 56 X1, X2 20 Write the associated linear equation for the inequality 8x1 +7x2 56. Use s₁ as the slack variable. (Type an equation. Do not factor.)