数学
一道数学题.5+ 1 / 3xy-(x+y)

2019-05-07

一道数学题.
5+ 1 / 3xy-(x+y)
优质解答
5+ 1 / 3xy-(x+y)=15xy/3xy+1/3xy-x-y
=(15xy+1)/3xy-3y/3xy-3x/3xy
=(15xy+1-3y-3x)/3xy
5+ 1 / 3xy-(x+y)=15xy/3xy+1/3xy-x-y
=(15xy+1)/3xy-3y/3xy-3x/3xy
=(15xy+1-3y-3x)/3xy
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