| x | = | ( | 5 | ÷ | 8 | ) | − | ( | ( | 5 | ÷ | 8 | ) | ( | 2 | ÷ | 5 | ) | ) | − | ( | ( | 5 | ÷ | 8 | ) | ( | 3 | ÷ | 10 | ) | ) |
| 方程右边 = | 5 | ÷ | 8 | − | ( | ( | 5 | ÷ | 8 | ) | ( | 2 | ÷ | 5 | ) | ) | − | ( | ( | 5 | ÷ | 8 | ) | ( | 3 | ÷ | 10 | ) | ) |
| = | 5 8 | − | ( | ( | 5 | ÷ | 8 | ) | ( | 2 | ÷ | 5 | ) | ) | − | ( | ( | 5 | ÷ | 8 | ) | ( | 3 | ÷ | 10 | ) | ) |
| = | 5 8 | − | ( | 5 | ÷ | 8 | ) | ( | 2 | ÷ | 5 | ) | − | ( | ( | 5 | ÷ | 8 | ) | ( | 3 | ÷ | 10 | ) | ) |
| = | 5 8 | − | 5 | ÷ | 8 | × | ( | 2 | ÷ | 5 | ) | − | ( | ( | 5 | ÷ | 8 | ) | ( | 3 | ÷ | 10 | ) | ) |
| = | 5 8 | − | 5 8 | ( | 2 | ÷ | 5 | ) | − | ( | ( | 5 | ÷ | 8 | ) | ( | 3 | ÷ | 10 | ) | ) |
| = | 5 8 | − | 5 8 | × | 2 | ÷ | 5 | − | ( | ( | 5 | ÷ | 8 | ) | ( | 3 | ÷ | 10 | ) | ) |
| = | 5 8 | − | 1 4 | − | ( | ( | 5 | ÷ | 8 | ) | ( | 3 | ÷ | 10 | ) | ) |
| = | 3 8 | − | ( | ( | 5 | ÷ | 8 | ) | ( | 3 | ÷ | 10 | ) | ) |
| = | 3 8 | − | ( | 5 | ÷ | 8 | ) | ( | 3 | ÷ | 10 | ) |
| = | 3 8 | − | 5 | ÷ | 8 | × | ( | 3 | ÷ | 10 | ) |
| = | 3 8 | − | 5 8 | ( | 3 | ÷ | 10 | ) |
| = | 3 8 | − | 5 8 | × | 3 | ÷ | 10 |
| = | 3 8 | − | 3 16 |
| = | 3 16 |
| x | = | 3 16 |