Jawabanmu

2014-08-18T18:37:18+07:00
2 ( x - 3y + xy ) - 2 xy + 3 y
=  2 x - 6y + 2 xy - 2 xy + 3y
=  2x - 6y + 3y + 2xy - 2xy
=  2x - 3y
1 5 1