x-y+z=6 x+y-z=0 2x-3y+8z=33
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x-y+z=6 x+y-z=0 2x-3y+8z=33
![x-y+z=6 x+y-z=0 2x-3y+8z=33](/uploads/image/z/15720286-22-6.jpg?t=x%EF%BC%8Dy%EF%BC%8Bz%EF%BC%9D6+x%EF%BC%8By%EF%BC%8Dz%EF%BC%9D0+2x%EF%BC%8D3y%EF%BC%8B8z%EF%BC%9D33)
x-y+z=6 (1).
x+y-z=0 (2).
2x-3y+8z=33 (3).
(1)+(2):2x=6, x=3.
(1)-(2):-2y+2z=6.
-y+z=3.
z=3+y.
2*3-3y+8(3+y)=33.
5y=33-30.
y=3/5.
z=3+3/5.
=18/5
∴ x=3,
y=3/5,
z=18/5.
x+y-z=0 (2).
2x-3y+8z=33 (3).
(1)+(2):2x=6, x=3.
(1)-(2):-2y+2z=6.
-y+z=3.
z=3+y.
2*3-3y+8(3+y)=33.
5y=33-30.
y=3/5.
z=3+3/5.
=18/5
∴ x=3,
y=3/5,
z=18/5.
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