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数学
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x+y-z=5,2x-2y-z=8,3x-y+2z=5
只要结果
人气:434 ℃ 时间:2020-04-14 11:07:28
解答
x=3
y=0
z=-2
推荐
{x+2y+z=8{2x-y-z=-3{3x+y-2z=-1
解三元一次方程组1、x+y-z=4 2x-y+z=5 x-3y+z=-2 2、y+2z=-2 3x+y-4z=1 2x-y+2z=8 3、x-2y+z=-1 x+y+z=2
(1)x+y-z=0 2x-y+3z=2 x-4y-2z+6=0(2)3x+y=6 x+2y-z=5 5x-3y+2z=4(3)x+y+z=-1 4x-2y+3z=5 y-z=8-2x
2x+3y-1=x+6 { y-x-8=x+6(二元一次方程) 3x+2y=1 2x-2y+2z=-5 x+2y-z=3(三元一次)
解x+2y+z=8,2x-y-z=-3,3x+y-2z=-1和x+2y+3z=4,y+z=1,3x+2z=3
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