oblicz wybranym przez siebie sposobem . a 1 i 1/3 - 2/3 b 2 i 2/4 - 3/4 c 4 i 2/5 - 2 i 4/5 d 6 i 2/9 - 4 i 7/9 e 11 i 1 /12 - 5 i 7/12 f 22 i 4/15 - 17 i 13/15. Proszę o szybka odpowiedz .
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a)1 i 1/3 - 2/3= 4/3-2/3=2/3
b)2 i 2/4-3/4=1 i 6/4-3/4=1 i 3/4
c)4 i 2/5-2 i 4/5=3 i 7/5-2 i 4/5=1 i 3/5
d)6 i 2/9-4 i 7/9=5 i 11/9-4 i 7/9=1 i 4/9
e)11 i 1/12 -5 i 7/12=10 i 13/12-5 i 7/12=5 i 6/12
f)22 i 4/15-17 i 13/15=21 i 19/15-17 i 13/15=4 i 6/15