Oblicz różnice.
Daje naj :)

Odpowiedź:
4 - 2 i 2/5 = 3 i 5/5 - 2 i 2/5 = 1 i 3/5
2 - 1 i 5/8 = 1 i 8/8 - 1 i 5/8 = 3/8
5 - 3 i 1/7 = 4 i 7/7 - 3 i 1/7 = 1 i 6/7
3 i 2/9 - 1 i 5/6 = 3 i 4/18 - 1 i 15/18 = 2 i 22/18 - 1 i 15/18 = 1 i 7/18
5 i 2/7 - 2 i 3/4 = 5 i 8/28 - 2 i 21/28 = 4 i 36/28 - 2 i 21/28 = 2 i 15/28
2 i 1/3 - 1 i 5/7 = 2 i 7/21 - 1 i 15/21 = 1 i 28/21 - 1 i 15/21 = 13/21
Odpowiedź:
a)4-2 2/5=1 3/5,
2-1 5/8=3/8,
5-3 1/7=1 6/7,
b)3 2/9-1 5/6=3 4/18-1 15/18=1 7/18,
5 2/7-2 3/4=5 8/28-2 21/28=2 15/28,
2 1/3-1 5/7=2 7/21-1 15/21=13/21,