Odpowiedzi

2009-11-17T16:42:52+01:00
2009-11-17T16:43:38+01:00
2009-11-17T16:45:38+01:00
-8+(-5)-(-7)+(-13)-(-10)-6=
= -8 - 5 + 7 - 13 + 10 - 6=
= - 15