1 10 | − | x | ÷ | 1 10 | − | 3 20 | = | 8300 | ÷ | 122210 |
| 方程左边 = | - | 1 20 | − | 10 | x |
| - | 1 20 | − | 10 | x | = | 8300 | ÷ | 122210 |
| 方程右边 = | 830 12221 |
| - | 1 20 | − | 10 | x | = | 830 12221 |
| - | 10 | x | = | 830 12221 | + | 1 20 |
| - | 10 | x | = | 28821 244420 |
| - | 28821 244420 | = | 10 | x |
| 10 | x | = | - | 28821 244420 |
| x | = | - | 28821 244420 | ÷ | 10 |
| = | - | 28821 244420 | × | 1 10 |
| x | = | - | 28821 2444200 |
| x | = | - 0.011792 |