Chapter 4.1, Problem 7E

In Exercises 7-16, determine whether the given simplex tableau is in final form. If so, find the solution to the associated regular linear programming problem. If not, find the pivot element to be used in the next iteration of the simplex method

	$x$	$y$	$u$	$v$	$P$	Constant
	$0$	$1$	$\frac{5}{7}$	$-\frac{1}{7}$	$0$	$\frac{20}{7}$
	$1$	$0$	$-\frac{3}{7}$	$\frac{2}{7}$	$0$	$\frac{30}{7}$
	$0$	$0$	$\frac{13}{7}$	$\frac{3}{7}$	$1$	$\frac{220}{7}$