| x | ÷ | 1000 | = | ( | 1 | − | ( | x | ÷ | 100 | − | x | ÷ | 1000 | ) | ) | × | 2 25 |
| 方程右边 = | 1 | × | 2 25 | − | ( | x | ÷ | 100 | − | x | ÷ | 1000 | ) | × | 2 25 |
| = | 2 25 | − | ( | x | ÷ | 100 | − | x | ÷ | 1000 | ) | × | 2 25 |
| = | 2 25 | − | x | ÷ | 100 | × | 2 25 | + | x | ÷ | 1000 | × | 2 25 |
| = | 2 25 | − | x | × | 1 1250 | + | x | × | 1 12500 |
| = | 2 25 | − | 9 12500 | x |
1 1000 | x | = | 2 25 | − | 9 12500 | x |
1 1000 | x | + | 9 12500 | x | = | 2 25 |
43 25000 | x | = | 2 25 |
| x | = | 2 25 | ÷ | 43 25000 |
| = | 2 25 | × | 25000 43 |
| = | 2 | × | 1000 43 |
| x | = | 2000 43 |
| x | = | 46.511628 |