| x | + | 191740 | + | x | × | 1 20 | + | ( | x | + | 191740 | + | x | × | 1 20 | ) | × | 9 100 | = | 2570000 |
| 方程左边 = | 21 20 | x | + | 191740 | + | ( | x | + | 191740 | + | x | × | 1 20 | ) | × | 9 100 |
21 20 | x | + | 191740 | + | ( | x | + | 191740 | + | x | × | 1 20 | ) | × | 9 100 | = | 2570000 |
| 方程左边 = | 21 20 | x | + | 191740 | + | x | × | 9 100 | + | 191740 | × | 9 100 | + | x | × | 1 20 | × | 9 100 |
| = | 21 20 | x | + | 191740 | + | x | × | 9 100 | + | 86283 5 | + | x | × | 9 2000 |
| = | 2289 2000 | x | + | 1044983 5 |
2289 2000 | x | + | 1044983 5 | = | 2570000 |
2289 2000 | x | = | 2570000 | − | 1044983 5 |
2289 2000 | x | = | 11805017 5 |
| x | = | 11805017 5 | ÷ | 2289 2000 |
| = | 11805017 5 | × | 2000 2289 |
| = | 1686431 | × | 400 327 |
| x | = | 674572400 327 |
| x | = | 2062912.538226 |