2 + 2 + 2 = 6

3 × 3 - 3 = 6

4 + 4 - 4 != 6

5 (5 - 5) != 6

6 ÷ 6 × 6 = 6

7 + 7 ÷ 7 != 6

8 × 8 ± 8 != 6

9 + 9 × 9 != 6