| 193000 | − | ( | 193000 | − | x | ) | × | 13 100 | − | x | = | 193000 | × | 1 25 |
| 方程左边 = | 193000 | − | 193000 | × | 13 100 | + | x | × | 13 100 | − | x |
| = | 193000 | − | 25090 | + | x | × | 13 100 | − | x |
| = | 167910 | − | 87 100 | x |
| 167910 | − | 87 100 | x | = | 193000 | × | 1 25 |
| 方程右边 = | 7720 |
| 167910 | − | 87 100 | x | = | 7720 |
| - | 87 100 | x | = | 7720 | − | 167910 |
| - | 87 100 | x | = | - | 160190 |
| 160190 | = | 87 100 | x |
87 100 | x | = | 160190 |
| x | = | 160190 | ÷ | 87 100 |
| = | 160190 | × | 100 87 |
| x | = | 16019000 87 |
| x | = | 184126.436782 |