1 10 | − | x | ÷ | 1 10 | − | 3 20 | = | 8300 | − | 0 | ÷ | 8300 | − | ( | - | 3910 | ) |
| 方程左边 = | - | 1 20 | − | 10 | x |
| - | 1 20 | − | 10 | x | = | 8300 | − | 0 | ÷ | 8300 | − | ( | - | 3910 | ) |
| 方程右边 = | 8300 | − | 0 | − | ( | - | 3910 | ) |
| = | 8300 | − | ( | - | 3910 | ) |
| - | 1 20 | − | 10 | x | = | 8300 | − | ( | - | 3910 | ) |
| 方程右边 = | 8300 | + | 3910 |
| = | 12210 |
| - | 1 20 | − | 10 | x | = | 12210 |
| - | 10 | x | = | 12210 | + | 1 20 |
| - | 10 | x | = | 244201 20 |
| - | 244201 20 | = | 10 | x |
| 10 | x | = | - | 244201 20 |
| x | = | - | 244201 20 | ÷ | 10 |
| = | - | 244201 20 | × | 1 10 |
| x | = | - | 244201 200 |
| x | = | - 1221.005 |