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irreducible? (Posted on 2013-03-29) Difficulty: 2 of 5
Prove that the fraction (21n+4)/(14n+3) is irreducible for every natural number n.

Source: Russian IMO

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
Hints/Tipsre(2): hmmmm finding limitAdy TZIDON2013-03-31 08:06:34
re: hmmmmbrianjn2013-03-30 02:58:37
An Observation and a Russian Notebrianjn2013-03-30 02:29:18
re: hmmmmSteve Herman2013-03-29 18:33:20
hmmmmbroll2013-03-29 10:32:05
SolutionRelatively easy (spoiler)Steve Herman2013-03-29 10:04:01
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