Odpowiedź :
a) 3/5+7/10 = 6/10+7/10 = 13/10 = 1 3/10
4/15-4/15 = 0
11/30+1/6 = 11/30+5/30 = 16/30
b) 2 9/16 - 1 1/4 = 2 9/16 - 1 4/16 = 1 5/16
12 2/3 + 1 3/4 = 12 8/12 + 1 9/12 = 13 17/12 = 14 5/12
8 1/4 - 2/8 = 8 2/8 - 2/8 = 8
Odpowiedź:
3/5 + 7/10 = 6/10 + 7/10 = 13/10 = 1 i 3/10
4/15 - 4/15 = 0
11/30 + 1/6 = 11/30 + 5/30 = 16/30 = 8/15
2 i 9/16 - 1 i 1/4 = 2 i 9/16 - 1 i 4/16 = 1 i 5/16
12 i 2/3 + 1 i 3/4 = 12 i 8/12 + 1 i 9/12 = 13 i 17/12 = 14 i 5/12
8 i 1/4 - 2/8 = 8 i 2/8 - 2/8 = 8