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2014-11-16T13:29:28+02:00
A+G+C=293
A+G=181, C=293-(A+G), C=293-181, C=112
G+C=218, A=293-(G+C), A=293-218, A=75
C+A=112+75, C+A=187, G=293-(C+A), G=293-187, G=106
Alina a rezolvat 75 exercitii, Cosmin a rezolvat 112 exercitii iar Gelu a rezolvat 106 exercitii
Verificare:75+112+106=293