| x | ÷ | ( | 731 | + | x | ) | = | 1 1000 |
| 方程两边同时乘以: | ( | 731 | + | x | ) |
| x | = | 1 1000 | ( | 731 | + | x | ) |
| x | = | 1 1000 | × | 731 | + | 1 1000 | x |
| x | = | 731 1000 | + | 1 1000 | x |
| x | − | 1 1000 | x | = | 731 1000 |
999 1000 | x | = | 731 1000 |
| x | = | 731 1000 | ÷ | 999 1000 |
| = | 731 1000 | × | 1000 999 |
| = | 731 | × | 1 999 |
| x | = | 731 999 |
| x | = | 0.731732 |