| ( | 486055 | − | x | ) | ÷ | ( | 1469329 | − | x | ) | = | 643 2000 |
| 方程两边同时乘以: | ( | 1469329 | − | x | ) |
| ( | 486055 | − | x | ) | = | 643 2000 | ( | 1469329 | − | x | ) |
| 486055 | − | x | = | 643 2000 | ( | 1469329 | − | x | ) |
| 486055 | − | x | = | 643 2000 | × | 1469329 | − | 643 2000 | x |
| 486055 | − | x | = | 944778547 2000 | − | 643 2000 | x |
| - | x | + | 643 2000 | x | = | 944778547 2000 | − | 486055 |
| - | 1357 2000 | x | = | 944778547 2000 | − | 486055 |
| - | 1357 2000 | x | = | - | 27331453 2000 |
27331453 2000 | = | 1357 2000 | x |
1357 2000 | x | = | 27331453 2000 |
| x | = | 27331453 2000 | ÷ | 1357 2000 |
| = | 27331453 2000 | × | 2000 1357 |
| = | 27331453 | × | 1 1357 |
| x | = | 27331453 1357 |
| x | = | 20141.085483 |