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How do I prove this: a/(3a - b + c) + b/(3b - c + a) + c/(3c - a + b) >=1

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This site is for research level math questions, not homework. – Max Jun 3 2011 at 7:43
13 
 With difficulty, if b and c are both zero. Gerhard "Ask Me About System Design" Paseman, 2011.06.02 – Gerhard Paseman Jun 3 2011 at 7:50
math.stackexchange.com is a more appropriate place to ask this question. Please see the faq on what sorts of questions one should ask here and which sites are more suitable for questions that are not appropriate for this site. – Amitesh Datta Jun 3 2011 at 8:01

closed as off topic by Gjergji Zaimi, Torsten Ekedahl, Mark Sapir, Dan Petersen, Andrew Stacey Jun 3 2011 at 8:28

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