Odpowiedzi

2010-03-08T18:50:39+01:00
10 + 10 = 20
20 - 13 = 7
13 - 3 = 10
14 + 4 = 18
8 - 8 = 0
2010-03-08T18:51:15+01:00
10+10=20
20-13=6
13-3=10
14+4=18
8-8=0