| ( | x | − | 315809 5000 | ) | ÷ | ( | x | + | 2 | ) | = | 311 625 |
| 方程两边同时乘以: | ( | x | + | 2 | ) |
| ( | x | − | 315809 5000 | ) | = | 311 625 | ( | x | + | 2 | ) |
| x | − | 315809 5000 | = | 311 625 | ( | x | + | 2 | ) |
| x | − | 315809 5000 | = | 311 625 | x | + | 311 625 | × | 2 |
| x | − | 315809 5000 | = | 311 625 | x | + | 622 625 |
| x | − | 311 625 | x | = | 622 625 | + | 315809 5000 |
314 625 | x | = | 622 625 | + | 315809 5000 |
314 625 | x | = | 64157 1000 |
| x | = | 64157 1000 | ÷ | 314 625 |
| = | 64157 1000 | × | 625 314 |
| = | 64157 8 | × | 5 314 |
| x | = | 320785 2512 |
| x | = | 127.701035 |