2x+2y分之3y+x方+xy分之2xy_数学解答

2x+2y分之3y+x方+xy分之2xy

人气：107 ℃　时间：2020-03-25 06:21:35

解答

3y/(2x+2y)+2xy/(x^2+xy)
=3y/[2(x+y)]+2xy/[x(x+y)]
=3y/[2(x+y)]+2y/[(x+y)]
=3y/[2(x+y)]+4y/[2(x+y)]
=(3y+4y)/[2(x+y)]
=7y/(2x+2y)