Odpowiedzi

2010-03-10T19:01:53+01:00
5x-2y+4x+y+x+y+3y+4 =
10x+3y+4
2010-03-10T19:03:10+01:00
5x-2y+4x+y+x+y+3y+4=10x+3y+4
2010-03-10T19:03:27+01:00
5x-2y+4x+y+x+y + 3y+4=10x+3y+4