Q=12x=15y=3x+15z怎么解求X :Y:Z
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Q=12x=15y=3x+15z怎么解求X :Y:Z
一条分式数学题已知x y z满足x/x+y + y/z+x + z/x+y =1,求x²/x+y + y²/z+x + z²/x+y的值.3Q
X+Y-Z=15 X+5Y+10Z=70 求:X、Y、Z
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x+2y+3Z=10,4x+3y+2z=15,求x+y+z=
解方程组:x:y:z=1:2:3;x+y+z=12,求,x,y,z的值
计算X+2Y+3Z=10X+2Y+3Z=104X+3Y+2Z=15求x+y+z=?
2x+3y+z=13 4x^2+9y^2+z^2-2x+15y+3z=82 求x,y,z
已知x+2y+4z=1,q求x^+y^+z^的最小值
如果|x+y+z-6|+|2x+3y-z-12|+|2x-y-z|=0求x,y,
秋节四元一次方程式4x+2y+8z+16Q=682x-12y+12z+q=7x+13y-11z+11q=256x+11y-5z-10q=93x+4y-z+5q=632x+2y-3z+3q=283x-y+3z+3q=237x-6y-2z-q=1
x=y/z=z/3,x+y+z =12,求2x+3y+4z是多少,
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x+y=14 z+x=15 2y+3x=30 求x y z
解方程组x-y=12,y-z=-15,z-x=3
数学题若1/x+2/y+3/z=5,3/x+2/y+1/z=7,求1/x+1/y+1/z=多少+,q
x+y-z=6,x+y=15,z×x=63.求x,y,z