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2014-11-12T21:33:24+02:00
2a=3b=6c=k
a=k/2, b=k/3, c=k/6
k/2+k/3+k/6=129
3k+2k+k=129*6=774
6k=774
k=774:6=129
a=129/2,b=k/3=43,c=129/6