| x | ÷ | ( | 1 100 | − | x | ) | = | 23 1000 |
| 方程两边同时乘以: | ( | 1 100 | − | x | ) |
| x | = | 23 1000 | ( | 1 100 | − | x | ) |
| x | = | 23 1000 | × | 1 100 | − | 23 1000 | x |
| x | = | 23 100000 | − | 23 1000 | x |
| x | + | 23 1000 | x | = | 23 100000 |
1023 1000 | x | = | 23 100000 |
| x | = | 23 100000 | ÷ | 1023 1000 |
| = | 23 100000 | × | 1000 1023 |
| = | 23 100 | × | 1 1023 |
| x | = | 23 102300 |
| x | = | 0.000225 |