121 5000 | ÷ | ( | 1 | + | x | ) | = | 10301 100 |
| 方程两边同时乘以: | ( | 1 | + | x | ) |
121 5000 | = | 10301 100 | ( | 1 | + | x | ) |
121 5000 | = | 10301 100 | × | 1 | + | 10301 100 | x |
121 5000 | = | 10301 100 | + | 10301 100 | x |
| - | 10301 100 | x | = | 10301 100 | − | 121 5000 |
| - | 10301 100 | x | = | 514929 5000 |
| - | 514929 5000 | = | 10301 100 | x |
10301 100 | x | = | - | 514929 5000 |
| x | = | - | 514929 5000 | ÷ | 10301 100 |
| = | - | 514929 5000 | × | 100 10301 |
| = | - | 514929 50 | × | 1 10301 |
| x | = | - | 514929 515050 |
| x | = | - 0.999765 |