Please enter the input filename (or simply press return to use ./project4-testA.txt) 
Converting the linear program in ./project4-testA.txt . . .

maximize 2x_1 - 3x_2
subject to
	x_3 = 7 - x_1 - x_2
	x_4 = -7 + x_1 + x_2
	x_5 = 4 - x_1 + 2x_2

	x_1, x_2, x_3, x_4, x_5 >= 0