9 = 3 x .?. 9 : 3 = 3
| 15 = 3 x .?. 15 : 3 = 5
| 27 = 3 x .?. 27 : 3 = 9
|
12 = 3 x .?. 12 : 3 = 4
| 21 = 3 x .?. 21 : 3 = 7
| 18 = 3 x .?. 18 : 3 = 6
|
0 = 3 x .?. 0 : 3 = 0 | 30 = 3 x .?. 30 : 3 = 10 |
|
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