Răspuns :
1. a : 6 = 13 rest 0
a = 6 × 13 + 0
a = 78 + 0
a = 78
2. a : 6 = 13 rest 1
a = 6 × 13 + 1
a = 78 + 1
a = 79
3. a : 6 = 13 rest 2
a = 6 × 13 + 2
a = 78 + 2
a = 80
4. a : 6 = 13 rest 3
a = 6 × 13 + 3
a = 78 + 3
a = 81
5. a : 6 = 13 rest 4
a = 6 × 13 + 4
a = 78 + 4
a = 82
6. a : 6 = 13 rest 5
a = 6 × 13 + 5
a = 78 + 5
a = 83