Odpowiedzi

2010-02-22T18:23:02+01:00
5 i 8/23+3i17/23+1i 6/23= 9 i 31/23= 10 i 8/23

1 i 9/13- 7/13= 1 i 2/13

8-3 i 1/11 = 4 i 10/11