39 100 | ÷ | x | × | ( | x | + | 1 | ) | = | 3451 10000 |
| 方程两边同时乘以: | x |
39 100 | ( | x | + | 1 | ) | = | 3451 10000 | x |
39 100 | x | + | 39 100 | × | 1 | = | 3451 10000 | x |
39 100 | x | + | 39 100 | = | 3451 10000 | x |
39 100 | x | − | 3451 10000 | x | = | - | 39 100 |
449 10000 | x | = | - | 39 100 |
| x | = | - | 39 100 | ÷ | 449 10000 |
| = | - | 39 100 | × | 10000 449 |
| = | - | 39 | × | 100 449 |
| x | = | - | 3900 449 |
| x | = | - 8.685969 |