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min |a-1|+|b-2|+c-3|+|3a+2b+c| (II Soros Olympiad 1995-96 R1 10.2)

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June 3, 2024
algebrainequalities

Problem Statement

Find the smallest value that the expression can take a1+b2+c3+3a+2b+c|a-1|+|b-2|+c-3|+|3a+2b+c| (aa, bb and cc are arbitrary numbers).