x-5y-3z=0 y+z-3x=3 x+y+3z=14 y+4z=3 z+x-3y=5 2x+y+z=7 2x-z=1
4个回答
第一个:X=32/35,Y=-11/35,Z=29/35
第二个 x=-17/4,Y=-19/4,Z=-5
第三个;X=1,Y=2,Z=3
相关问题
x+2z=3 x+y+z=2 2x+y=2 3x-y-4z=5 2y+z=7 2x+3y-2z=0
x+y+z=2 ① 2x+3y+z=38 ① x+y=3 3x-y-4z=5 ② 3x+4y+2z+56 ② y+z=5
2x-y=7 x+y+z=25x+3y+z=2 x-2y+z=-1 3x-4z=4 x+2y+3z=-1x+y-z=6x
3x+2y+z=14 ,x+y+z=10,z+2x+3y=1 5
三元一次方程求解:①x+2z=3,2x+y=2,2y+z=7.②x+y+z=2,3x-y-4z=5,2x+3y-2z=0
x+2y+3z=14 2x+y+z=7 3x+y+2z=11 求x y z
(2X-3Y+Z)-3{X-2[-Z+(X-Y)]-(3Y-5Z)}
证明:(y+z-2x)3+(z+x-2y)3+(x+y-2z)3=3(y+z-2x)(z+x-2y)(x+y-2z).
3x+2y+z=30,3x+y+2z=14,5x+3z=44,3x+2z=?
x+y-z=0 2x-3y+2z=5 x+2y-z=3