x=5/3
y=1/2
z=1/6
x+y-z=2 5x+2y-2z=9 3x-y-3z=4
2个回答
相关问题
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3x+2y+z=9 x-3y-2z=1 -x+4y+4z=5
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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
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9x+4y+z=10 {-9x+2y+3z=-6 3x-4y+2z=5
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x-2y+3z=0,3x+2y+5z=12,2x-4y-z=(-9)
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3x+4z=7 2x+3y+z=9 5x+9y+7z=8 2x+y+z=9 x+2y+z=8 x+y+2z=7 三元一次
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x-2y+z=9, 2x+y+3z=10, 3x+2y-4z=-3
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x+2z=3 x+y+z=2 2x+y=2 3x-y-4z=5 2y+z=7 2x+3y-2z=0
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1:7x+2y-z=7 2:6x-y+z=7 3:4x+3y+z=9 1：9x+4y+z+10 2：-9X+2y+3z=
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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
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x-2y+z=9 3x+2y-2z=4 2x-z=9