| ( | x | − | 315809 5000 | ) | ÷ | ( | x | + | 2 | ) | = | 1511 5000 |
| 方程两边同时乘以: | ( | x | + | 2 | ) |
| ( | x | − | 315809 5000 | ) | = | 1511 5000 | ( | x | + | 2 | ) |
| x | − | 315809 5000 | = | 1511 5000 | ( | x | + | 2 | ) |
| x | − | 315809 5000 | = | 1511 5000 | x | + | 1511 5000 | × | 2 |
| x | − | 315809 5000 | = | 1511 5000 | x | + | 1511 2500 |
| x | − | 1511 5000 | x | = | 1511 2500 | + | 315809 5000 |
3489 5000 | x | = | 1511 2500 | + | 315809 5000 |
3489 5000 | x | = | 318831 5000 |
| x | = | 318831 5000 | ÷ | 3489 5000 |
| = | 318831 5000 | × | 5000 3489 |
| = | 106277 | × | 1 1163 |
| x | = | 106277 1163 |
| x | = | 91.381771 |