| 100 | × | 10 | + | 10 | × | 587 10 | + | x | × | 82 | = | ( | 100 | + | x | ) | × | 25 |
| 方程左边 = | 1000 | + | 587 | + | x | × | 82 |
| = | 1587 | + | 82 | x |
| 1587 | + | 82 | x | = | ( | 100 | + | x | ) | × | 25 |
| 方程右边 = | 100 | × | 25 | + | x | × | 25 |
| = | 2500 | + | x | × | 25 |
| 1587 | + | 82 | x | = | 2500 | + | 25 | x |
| 82 | x | − | 25 | x | = | 2500 | − | 1587 |
| 57 | x | = | 2500 | − | 1587 |
| 57 | x | = | 913 |
| x | = | 913 | ÷ | 57 |
| = | 913 | × | 1 57 |
| x | = | 913 57 |
| x | = | 16.017544 |