x=8,y=16
z+y=3x,3x-9=y-1,5y-5=3x-7
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相关问题
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y-3x-2z=1,x+2y+3z=9,5x-7y+z=34
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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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3x+3y3z=18 6z-5x+y=15 7z+x-9y=4
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3x+4y=7(1)2x+3y+z=9(2)5x-9y+7z=8(3)这个怎么解?
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2X+4Y+3Z=9 3X-6Y+5Z=11 5X-6Y+7Z=13
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2X+4y+3z=9 3x-2y+5z=11 5x-6y+7z=13
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4x+4y+3z=9,3x-2y+5z=11,5x-6y+7z=13
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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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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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解三元一次方程:3x+4z=7 2x+3y+z=9 5x-9y+7z=-6