>>115

(x+y)/xy=2/15丄15(x+y)=2xy丄4xy-30x-30y=0丄(2x-15)(2y-15)=225=3񑧉�5
x=8,y=120仜;丂x=7,y=-105亊
x=9,y=45 仜; x=6,y=-30亊
x=10,y=30仜; x=5,y=-15亊
x=12,y=20仜; x=3,y=-4亊
x=15,y=15仜; x=0,y=0亊
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