| 1255000 | − | ( | 1255000 | − | x | ) | × | 3 50 | − | x | = | 1255000 | × | 1 25 |
| 方程左边 = | 1255000 | − | 1255000 | × | 3 50 | + | x | × | 3 50 | − | x |
| = | 1255000 | − | 75300 | + | x | × | 3 50 | − | x |
| = | 1179700 | − | 47 50 | x |
| 1179700 | − | 47 50 | x | = | 1255000 | × | 1 25 |
| 方程右边 = | 50200 |
| 1179700 | − | 47 50 | x | = | 50200 |
| - | 47 50 | x | = | 50200 | − | 1179700 |
| - | 47 50 | x | = | - | 1129500 |
| 1129500 | = | 47 50 | x |
47 50 | x | = | 1129500 |
| x | = | 1129500 | ÷ | 47 50 |
| = | 1129500 | × | 50 47 |
| x | = | 56475000 47 |
| x | = | 1201595.744681 |