若(5x+y)/(7x+10y)=1/2则x/y=

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若(5x+y)/(7x+10y)=1/2则x/y=若(5x+y)/(7x+10y)=1/2则x/y=若(5x+y)/(7x+10y)=1/2则x/y=

若(5x+y)/(7x+10y)=1/2则x/y=
若(5x+y)/(7x+10y)=1/2则x/y=

若(5x+y)/(7x+10y)=1/2则x/y=