x-y=4xy,试求2x+3xy-2y/x-2xy-y

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x-y=4xy,试求2x+3xy-2y/x-2xy-yx-y=4xy,试求2x+3xy-2y/x-2xy-yx-y=4xy,试求2x+3xy-2y/x-2xy-y(2x+3xy-2y)/(x-2xy-

x-y=4xy,试求2x+3xy-2y/x-2xy-y
x-y=4xy,试求2x+3xy-2y/x-2xy-y

x-y=4xy,试求2x+3xy-2y/x-2xy-y
(2x+3xy-2y)/(x-2xy-y)
=(2(x-y)+3xy)/((x-y)-2xy)
=(8xy+3xy)/(4xy-2xy)
=11xy/2xy
=11/2

2x+3xy-2y/x-2xy-y
==> [ 2(x-y)+3xy ] / [ (x-y)-2xy]
==> x-y=4xy代入
==> 11xy/2xy
==> 11/2

(2x+3xy-2y)/(x-y-2xy)
=11xy/2xy
=11/2