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若X/10=Y/11=Z/12(x≠0),则(3X+2Y-4Z)/(5X-6Y)=?请各位大哥大姐教教我啊
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相关问题
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若4X-3y-6z=0 x=2y-7z=0(x*y*z≠0) 求代数式 5x*5x+2y*2y-6z*6z/2x*2x-
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解方程:(1)4x+7y=10 (2)x+y-z=0 6x-11y+28=0 x+2y-z=3 2x-3y+2z=5
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4x-3y-z=-11,2x+2y+z=11,-2x+5y-2z=6
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若x+2y-4z=0 3x+y-z=0 则 x:y:z= ————
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若4x-3y-6z=0,x+2y-7z=0(xyz≠0),则x:y:z=______.
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若4x-3y-6z=0,x+2y-7z=0(xyz≠0),则x:y:z=______.
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若4x-3y-6z=0,x+2y-7z=0(xyz≠0),则x:y:z=______.
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解三元一次方程组:(1)x+2y+3z=11x-y+4z=10x+3y+2z=2(2)x:y=3:5y:z=5:6x+y
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若X+Y-Z=11,Y+Z-X=5,Z+X-Y=1,则X+Y+Z=?
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若2x+3y+4z=6,3x+2y+z=4,则x+y+z=