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Calculeaza, folosind proprietatile adunarii:..


Ajutooor, dau coroana si puncte


Calculeaza Folosind Proprietatile AdunariiAjutooor Dau Coroana Si Puncte class=

Răspuns :

a)2/7 + 5/7 + 14/11 + 8/11 = 
7/7 + 22/11 =
1 + 2 =
3

b)12/17 + 5/17 + 17/19 + 2/19 =
17/17 + 19/19 = 
1 + 1 =
2

c)(2+7+1)/15 = 
10/15 =
2/3

d)11/7 + 3/7 + 11/5 + 19/5 =
14/7 + 30/5 =
2 + 6 =
8

e)2,(7) = 2 intregi 7/9 = 25/9
1,5 = 15/10 = 3/2
25/9 + 20/9 + 3/2 + 15/2 = 
45/9 + 18/2 =
5 + 9 =
14