2ab+2c=3ab-3c=> 2ab-3ab=-3c-2c=> -ab=-5c=> ab=5c
ab=5•c=> b=0 sau b=5
c=1=>ab=5 care nu verifica pt ca ab trebuie sa aiba 2 cifre
c=2=>ab=10=> abc=102
c=3=>ab=15=> abc=153
c=4=>ab=20=>abc=204
c=5=>ab=25=>abc=255
c=6=>ab=30=>abc=306
c=7=>ab=35=>abc=357
c=8=>ab=40=>abc=408
c=9=>ab=45=> abc=459
abc € {102, 153, 204, 255, 306, 357, 408, 459}
Sper ca e bine si ca te am ajutat:)
