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va rog dau coroana va rog!!!!​

Va Rog Dau Coroana Va Rog class=

Răspuns :

Răspuns:

a) 4

b)29

c)12

d)2

sper ca te-am ajutat

a) 11/8+x/8=15/8

15/8-11/8=4/8

11/8+4/8=15/8

x=4/8

b)y/13+11/13=30/13

30/13-11/13=19/13

19/13+11/13=30/13

y=19/13

c)8/11+n/11+20/11

20/11-8/11=12/11

8/11+12/11=20/11

n=12/11

d)c/15+17/15=19/15

19/15-17/15=2/15

2/15+17/15=19/15

c=2/15