x=1/2,y =-1,z=1/5
x-y=3/2 x+z=7/10 y-z=-6/5
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3x+7y+z=5 ,4x+10y+z=6 ,x+y+z=
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已知4x-3y-6z=0,x+2y-7z=0,求5x+2y-z/2x-3y-10z
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{3x-2y+5z=02x+5y-10z=192x+3y+15z=13{x+y=3y+z=5x+z=6
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2x+5y+4z=6,3x+y-7z=-4,x+y-z=?
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x+y+z=16 5x+6y+7z=10
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3x+2y+6z=61 3x+5z=44 2y+5x=25 5z+7y=70 求 x=? y=? z=?
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