Răspuns :
20 + 8 = 4 × 7
4 × 5 = 10 + 10
37 + 3 = 10 × 4
3 × 2 × 3 = 2 × 9
16 + 9 = 5 × 5
2 × 2 × 2 × 2 = 4 × 4
4 × 5 = 10 + 10
37 + 3 = 10 × 4
3 × 2 × 3 = 2 × 9
16 + 9 = 5 × 5
2 × 2 × 2 × 2 = 4 × 4