Odpowiedzi

2010-03-02T18:43:13+01:00
28 -24/21 +1 3/7=28- 1.3/21+1.3/7=28- 1 1/7+1 3/7= 28 2/7
2010-03-02T18:48:27+01:00
28-24/21+1 3/7= 28- 1 3/21+ 1 3/7= 26 18/21+ 1 3/7= 26 18/21 +
+ 1 9/21= 27 27/21= 28 6/21= 28 2/7