Odpowiedzi

2010-02-25T17:44:48+01:00
5a+4(a-1)=5a+4a-4=9a-4
1 5 1
2010-02-25T17:44:53+01:00
5a+4(a-1)=5a+4a-4=9a-4
1 5 1
2010-02-25T17:45:36+01:00
5a + 4(a-1)=
= 5a + 4a - 4=
= 9a - 4
1 5 1