1./x-100/+/y+1/49/+/z+0.1/=0则XYZ 2.如果-XYZ

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1./x-100/+/y+1/49/+/z+0.1/=0则XYZ2.如果-XYZ1./x-100/+/y+1/49/+/z+0.1/=0则XYZ2.如果-XYZ1./x-100/+/y+1/49/+/

1./x-100/+/y+1/49/+/z+0.1/=0则XYZ 2.如果-XYZ
1./x-100/+/y+1/49/+/z+0.1/=0则XYZ 2.如果-XYZ

1./x-100/+/y+1/49/+/z+0.1/=0则XYZ 2.如果-XYZ
X-100=0所以X=100
大于