Răspuns :
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Daca (ab ; 60) = 12 inseamna ca 12 | ab = M₁₂ => ab = {12;24;36;48;...;72;84;96}
Daca (ab ; 60) = 12 inseamna ca 12 | ab = M₁₂ => ab = {12;24;36;48;...;72;84;96}