1.x - 5y -3z =3 2.4x+9y=12 3.3x-y+2z=3
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1.x - 5y -3z =3 2.4x+9y=12 3.3x-y+2z=3
y+4z=3 3y-2z=1 2x+y-3x=11
2x - z=1 2x+6z=3 x+y+z=12
y+4z=3 3y-2z=1 2x+y-3x=11
2x - z=1 2x+6z=3 x+y+z=12
![1.x - 5y -3z =3 2.4x+9y=12 3.3x-y+2z=3](/uploads/image/z/19284234-42-4.jpg?t=1.x+-+5y+-3z+%3D3+2.4x%2B9y%3D12+3.3x-y%2B2z%3D3)
1.x=1,y=-1,z=1
2.x=3,y=0,z=-1/2
3,第二个式子是不是2x+y-3z=11哦,我按这算的.
x=3,y=8,z=1.
2.x=3,y=0,z=-1/2
3,第二个式子是不是2x+y-3z=11哦,我按这算的.
x=3,y=8,z=1.
x/2=y/3=z/5 x+3y-z/x-3y+z
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