已知1/x=3+1/y,则(2x-5xy-2y)/(y+3xy-x)=_______.
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已知1/x=3+1/y,则(2x-5xy-2y)/(y+3xy-x)=_______.已知1/x=3+1/y,则(2x-5xy-2y)/(y+3xy-x)=_______.已知1/x=3+1/y,则(
已知1/x=3+1/y,则(2x-5xy-2y)/(y+3xy-x)=_______.
已知1/x=3+1/y,则(2x-5xy-2y)/(y+3xy-x)=_______.
已知1/x=3+1/y,则(2x-5xy-2y)/(y+3xy-x)=_______.
1/x=3+1/y
1/x-1/y=3
3xy=y-x
x-y=-3xy
(2x-5xy-2y)/(y+3xy-x)
=(-6xy-5xy)/(3xy+3xy)
=-11/6
1/x=3+1/y
Y-X=3XY
X-Y=-3XY
(2x-5xy-2y)/(y+3xy-x)
=(-11XY)/(6XY)
=-11/6
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