Jawabanmu

2014-09-02T21:17:51+07:00
2xy+6y+9p dari 7xy+3p+4y= (7xy+3p+4y)-(2xy+6y+9p)= 7xy+3p+4y-2xy+6y+9p= 7xy-2xy+3p+9p+4y+6y= 5xy+12p+10y