已知1/x=1/y+4,求分式(6x+3xy-6y)/(x-y-2xy)的值?
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解一道分式题已知1/x-1/y=3 求分式(4x-5xy-4y)/(3x-2xy-3y)的值.
已知1/x=1/y+4,求分式(6x+3xy-6y)/(x-y-2xy)的值?
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