求方程组1/2x-y=1/3z x-y-1=z 4x-5y+3z=5
1个回答
展开全部
1/2x-y=1/3z
3x-6y-2z=0.(1)
x-y-1=z
x-y-z=1.(2)
4x-5y+3z=5 ...(3)
(2)*6-(1):3x-4z=6.(4)
(2)*5-(3):x-8z=0.(5)
(4)*2-(5):5x=12
x=12/5
代入(4):3*12/5-4z=6
4z=36/5-6=6/5
z=3/10
代入(2):12/5-y-3/10=1
y=12/5-3/10-1=1.1
3x-6y-2z=0.(1)
x-y-1=z
x-y-z=1.(2)
4x-5y+3z=5 ...(3)
(2)*6-(1):3x-4z=6.(4)
(2)*5-(3):x-8z=0.(5)
(4)*2-(5):5x=12
x=12/5
代入(4):3*12/5-4z=6
4z=36/5-6=6/5
z=3/10
代入(2):12/5-y-3/10=1
y=12/5-3/10-1=1.1
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询