Răspuns :
Răspuns:
1530:a=C₁ rest 18
1530 =aC₁+18
aC₁=1530-18
aC₁=1512
813 :a=C₂ rest 21
813=aC₂+ 21
aC₂= 813-21
aC₂=792
1027 :a=C₃ rest 19
1027=aC₃+19
aC₃= 1027-19
aC₃=1008
1512 = 2³·3³·7
792 = 2³·3²·11
1008 = 2⁴·3²·7
a=2³·3²=8·9=72
verificare:
1530:72=21 rest 18
813:72=11 rest 21
1027:72=14 rest 17