Odpowiedź:
a) 5 2/3 + 2 3/4= 5 8/12 + 2 9/12= 7 17/12= 8 5/12
6 1/2 - 2 7/9= 6 9/18- 2 14/18= 5 27/18- 2 14/18= 3 13/18
1 1/5 × 2 2/9= 6/5× 20/9= 8/3= 2 2/3
2/5 : 8 = 2/5: 8/1= 2/5 × 1/8= 1/20
2 1/3 : 14= 7/3 : 14/1= 7/3 × 1/14= 1/6
4 7/9 + 3 4/9= 7 11/9= 8 2/9
9 1/6 - 7 5/6= 8 7/6 - 7 5/6= 1 2/6= 1 1/3
3 3/4 : 3 1/8= 15/4 : 25/8= 15/4 × 8/25= 6/5= 1 1/5
