Odpowiedzi

2010-02-10T17:48:17+01:00
(- 63 + 28) - (-16 -13) = -35 + 29 = -6
1 5 1
2010-02-10T17:48:42+01:00
-63+28=-35
-16+(-13)=29
-35+29=-6
1 5 1