| x | − | ( | ( | x | − | 527301 100 | ) | × | 10 100 | − | 2520 | ) | = | 30000 |
| 方程左边 = | x | − | ( | x | − | 527301 100 | ) | × | 10 100 | + | 2520 |
| = | x | − | x | × | 10 100 | + | 527301 100 | × | 10 100 | + | 2520 |
| = | x | − | x | × | 10 100 | + | 527301 1000 | + | 2520 |
| = | 9 10 | x | + | 3047301 1000 |
9 10 | x | + | 3047301 1000 | = | 30000 |
9 10 | x | = | 30000 | − | 3047301 1000 |
9 10 | x | = | 26952699 1000 |
| x | = | 26952699 1000 | ÷ | 9 10 |
| = | 26952699 1000 | × | 10 9 |
| = | 8984233 100 | × | 1 3 |
| x | = | 8984233 300 |
| x | = | 29947.443333 |