| 2000 | × | 5 100 | = | x | × | 99 100 | + | ( | 2000 | − | x | ) | × | 1 1000 |
| 方程左边 = | 100 |
| 100 | = | x | × | 99 100 | + | ( | 2000 | − | x | ) | × | 1 1000 |
| 方程右边 = | 99 100 | x | + | 2000 | × | 1 1000 | − | x | × | 1 1000 |
| = | 99 100 | x | + | 2 | − | x | × | 1 1000 |
| = | 989 1000 | x | + | 2 |
| 100 | = | 989 1000 | x | + | 2 |
| - | 989 1000 | x | = | 2 | − | 100 |
| - | 989 1000 | x | = | - | 98 |
| 98 | = | 989 1000 | x |
989 1000 | x | = | 98 |
| x | = | 98 | ÷ | 989 1000 |
| = | 98 | × | 1000 989 |
| x | = | 98000 989 |
| x | = | 99.08999 |