计算:3y/(2x+2y) +2xy/x²+xy
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计算:3y/(2x+2y) +2xy/x²+xy
计算:3y/(2x+2y) +2xy/x²+xy
计算:3y/(2x+2y) +2xy/x²+xy
3y/(2x+2y) +2xy/x²+xy
=3y/2(x+y)+2xy/x(x+y)
=3xy+4xy/2x(x+y)
=7xy/x+y