Răspuns :
10 + 30 + 80 = 120
50 + 50 + 20 = 120
60 + 40 + 20 = 120
_ ↓___↓___↓_____
120 120 120
80 + 0 + 40 = 120
20 + 40 + 60 = 120
20 + 80 + 20 = 120
_↓___ ↓___↓_____
120 120 120
40 + 60 + 20 = 120
50 + 40 + 30 = 120
30 + 20 + 70 = 120
_↓___↓___↓_____
120 120 120
50 + 50 + 20 = 120
60 + 40 + 20 = 120
_ ↓___↓___↓_____
120 120 120
80 + 0 + 40 = 120
20 + 40 + 60 = 120
20 + 80 + 20 = 120
_↓___ ↓___↓_____
120 120 120
40 + 60 + 20 = 120
50 + 40 + 30 = 120
30 + 20 + 70 = 120
_↓___↓___↓_____
120 120 120