Răspuns :
a + b + c = 123 = > c=13 >b => c= b +13
a + b + b + 13 = 123
a + 2b = 110
a ; b = 4 rest 8 = > a = 4b + 8
4b + 8 + 2b = 110
6b = 102
b = 102 : 6
b = 17
a = 17 x 4 + 8 = 76
c = 17 + 13 = 30
76 + 17 + 30 = 123
a + b + b + 13 = 123
a + 2b = 110
a ; b = 4 rest 8 = > a = 4b + 8
4b + 8 + 2b = 110
6b = 102
b = 102 : 6
b = 17
a = 17 x 4 + 8 = 76
c = 17 + 13 = 30
76 + 17 + 30 = 123