| 6 | − | 2 | X | + | 1 | ÷ | 5 | = | X | − | 1 | ÷ | 3 | + | 6 |
| 方程左边 = | 6 | − | 2 | X | + | 1 5 |
| = | 31 5 | − | 2 | X |
31 5 | − | 2 | X | = | X | − | 1 | ÷ | 3 | + | 6 |
| 方程右边 = | X | − | 1 3 | + | 6 |
| = | X | + | 17 3 |
31 5 | − | 2 | X | = | X | + | 17 3 |
| - | 2 | X | − | X | = | 17 3 | − | 31 5 |
| - | 3 | X | = | 17 3 | − | 31 5 |
| - | 3 | X | = | - | 8 15 |
8 15 | = | 3 | X |
| 3 | X | = | 8 15 |
| X | = | 8 15 | ÷ | 3 |
| = | 8 15 | × | 1 3 |
| X | = | 8 45 |
| X | = | 0.177778 |