| X | ÷ | 3 | + | 2 | − | 1 | = | 2 | X | ÷ | 4 | − | 1 |
| Left side of the equation = | 1 3 | X | + | 1 |
1 3 | X | + | 1 | = | 2 | X | ÷ | 4 | − | 1 |
| Right side of the equation = | 1 2 | X | − | 1 |
1 3 | X | + | 1 | = | 1 2 | X | − | 1 |
1 3 | X | − | 1 2 | X | = | - | 1 | − | 1 |
| - | 1 6 | X | = | - | 1 | − | 1 |
| - | 1 6 | X | = | - | 2 |
| 2 | = | 1 6 | X |
1 6 | X | = | 2 |
| X | = | 2 | ÷ | 1 6 |
| = | 2 | × | 6 |
| X | = | 12 |