| ( | 1 | ÷ | 2 | + | 1 | ÷ | 3 | ) | ( | 3 | ÷ | 4 | − | 1 | ÷ | 2 | ) | X | = | 5 | ÷ | 6 |
| 方程左边 = | 1 | ÷ | 2 | × | ( | 3 | ÷ | 4 | − | 1 | ÷ | 2 | ) | X | + | 1 | ÷ | 3 | × | ( | 3 | ÷ | 4 | − | 1 | ÷ | 2 | ) | X |
| = | 1 2 | ( | 3 | ÷ | 4 | − | 1 | ÷ | 2 | ) | X | + | 1 3 | ( | 3 | ÷ | 4 | − | 1 | ÷ | 2 | ) | X |
| = | 1 2 | × | 3 | ÷ | 4 | × | X | − | 1 2 | × | 1 | ÷ | 2 | × | X | + | 1 3 | ( | 3 | ÷ | 4 | − | 1 | ÷ | 2 | ) | X |
| = | 3 8 | X | − | 1 4 | X | + | 1 3 | ( | 3 | ÷ | 4 | − | 1 | ÷ | 2 | ) | X |
| = | 1 8 | X | + | 1 3 | ( | 3 | ÷ | 4 | − | 1 | ÷ | 2 | ) | X |
| = | 1 8 | X | + | 1 3 | × | 3 | ÷ | 4 | × | X | − | 1 3 | × | 1 | ÷ | 2 | × | X |
| = | 1 8 | X | + | 1 4 | X | − | 1 6 | X |
| = | 5 24 | X |
5 24 | X | = | 5 | ÷ | 6 |
| 方程右边 = | 5 6 |
5 24 | X | = | 5 6 |
| X | = | 5 6 | ÷ | 5 24 |
| = | 5 6 | × | 24 5 |
| = | 1 | × | 4 |
| X | = | 4 |