19 Oblicz
a) 2/3-5/9
b) 5/6-3/8
c) 1 1/8-3/5
d) 3 2/9-11/12
e) 6 1/7-2 2/3
f) 4 1/12- 1 3/8
a) 2/3-5/9
b) 5/6-3/8
c) 1 1/8-3/5
d) 3 2/9-11/12
e) 6 1/7-2 2/3
f) 4 1/12- 1 3/8
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Odpowiedź:
2/3 - 5/9 = 6/9 - 5/9 = 1/9
5/6 - 3/8 = 20/24 - 9/24 = 11/24
1 i 1/8 - 3/5 = 1 i 5/40 - 24/40 = 45/40 - 24/40 = 21/40
3 i 2/9 - 11/12 = 3 i 8/36 - 33/36 = 2 i 44/36 - 33/36 = 2 i 11/36
6 i 1/7 - 2 i 2/3 = 6 i 3/21 - 2 i 14/21 = 5 i 24/21 - 2 i 14/21 = 3 i 10/21
4 i 1/12 - 1 i 3/8 = 4 i 2/24 - 1 i 9/24 = 3 i 26/24 - 1 i 9/24 = 2 i 17/24