C_j			30	50	30	0	0	0	$b / a_{i k}$
C_b	X_b	b	x₁	x₂	x₃	x₄	x₅	x₆
0	x₄	14,000/3	9	0	[20/3]	1	0	−4/15	700
0	x₅	16,000/9	−46/3	0	−20/9	0	1	−23/45	—
50	x₂	4000/9	2/3	1	4/9	0	0	1/45	1000
检验行		20,0000/9	10/3	0	−70/9	0	0	10/9	存在负检验数