| ( | 29402 | − | 2 | x | ) | ÷ | ( | 2 | x | + | 1 | ) | = | 4 |
| 方程两边同时乘以: | ( | 2 | x | + | 1 | ) |
| ( | 29402 | − | 2 | x | ) | = | 4 | ( | 2 | x | + | 1 | ) |
| 29402 | − | 2 | x | = | 4 | ( | 2 | x | + | 1 | ) |
| 29402 | − | 2 | x | = | 4 | × | 2 | x | + | 4 | × | 1 |
| 29402 | − | 2 | x | = | 8 | x | + | 4 |
| - | 2 | x | − | 8 | x | = | 4 | − | 29402 |
| - | 10 | x | = | 4 | − | 29402 |
| - | 10 | x | = | - | 29398 |
| 29398 | = | 10 | x |
| 10 | x | = | 29398 |
| x | = | 29398 | ÷ | 10 |
| = | 29398 | × | 1 10 |
| = | 14699 | × | 1 5 |
| x | = | 14699 5 |
| x | = | 2939.8 |