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aflati numarul natural n stiind ca a) 3/4<n/5<5/6
plzz.


Răspuns :

3/4 < n/5 < 5/6 
0,75 < n/5 < 0,8(3) 
=> n = 4 
4/5 = 0,8 

3/4 < 4/5 < 5/6