计算3y/xy-2x+6/2x-xy 很急很急!求帮助!
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计算3y/xy-2x+6/2x-xy很急很急!求帮助!计算3y/xy-2x+6/2x-xy很急很急!求帮助!计算3y/xy-2x+6/2x-xy很急很急!求帮助!3y/xy-2x+6/2x-xy=3y
计算3y/xy-2x+6/2x-xy 很急很急!求帮助!
计算3y/xy-2x+6/2x-xy 很急很急!求帮助!
计算3y/xy-2x+6/2x-xy 很急很急!求帮助!
3y/xy-2x+6/2x-xy
=3y/xy-2x-6/xy-2x
=(3y-6)/(xy-2x)
=3(y-2)/x(y-2)
=3/x
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