初二下数学分式计算3y/2x+2y+2xy/x²+xy
问题描述:
初二下数学分式计算3y/2x+2y+2xy/x²+xy
答
3y/(2x+2y) +2xy/x²+xy
=3y/2(x+y)+2xy/x(x+y)
=3xy+4xy/2x(x+y)
=7xy/x+y
答
3y/2(x+y)+2y/(x+y)=7y/2(x+y)