| X | ÷ | ( | X | + | 7200 | × | 2259 | ) | = | 9 200 |
| 方程两边同时乘以: | ( | X | + | 7200 | × | 2259 | ) |
| X | = | 9 200 | ( | X | + | 7200 | × | 2259 | ) |
| X | = | 9 200 | X | + | 9 200 | × | 7200 | × | 2259 |
| X | = | 9 200 | X | + | 731916 |
| X | − | 9 200 | X | = | 731916 |
191 200 | X | = | 731916 |
| X | = | 731916 | ÷ | 191 200 |
| = | 731916 | × | 200 191 |
| X | = | 146383200 191 |
| X | = | 766404.188482 |