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Determinati n apartine N pentru care
 3/4<n+5/12<11/6


Răspuns :

3/4<n+5/12<11/6 |-5/12⇔3/4-5/12<n<11/6-5/12⇔9/12-5/12<n<22/12-5/12⇔  4/12<n<17/12⇔0,(3)<n<1,41(6)⇒n∈{1}⇒n=1