| x | ÷ | ( | 100 | + | x | ) | = | 119 5000 |
| 方程两边同时乘以: | ( | 100 | + | x | ) |
| x | = | 119 5000 | ( | 100 | + | x | ) |
| x | = | 119 5000 | × | 100 | + | 119 5000 | x |
| x | = | 119 50 | + | 119 5000 | x |
| x | − | 119 5000 | x | = | 119 50 |
4881 5000 | x | = | 119 50 |
| x | = | 119 50 | ÷ | 4881 5000 |
| = | 119 50 | × | 5000 4881 |
| = | 119 | × | 100 4881 |
| x | = | 11900 4881 |
| x | = | 2.438025 |