| 10 | − | x | ÷ | 10 | − | 15 | = | 1 | ÷ | 3910 |
| 方程左边 = | - | 5 | − | 1 10 | x |
| - | 5 | − | 1 10 | x | = | 1 | ÷ | 3910 |
| 方程右边 = | 1 3910 |
| - | 5 | − | 1 10 | x | = | 1 3910 |
| - | 1 10 | x | = | 1 3910 | + | 5 |
| - | 1 10 | x | = | 19551 3910 |
| - | 19551 3910 | = | 1 10 | x |
1 10 | x | = | - | 19551 3910 |
| x | = | - | 19551 3910 | ÷ | 1 10 |
| = | - | 19551 3910 | × | 10 |
| = | - | 19551 391 | × | 1 |
| x | = | - | 19551 391 |
| x | = | - 50.002558 |