| X | = | ( | X | + | 5000 | ) | ÷ | 53 50 | × | 3 50 | × | 28 25 |
| 方程右边 = | ( | X | + | 5000 | ) | × | 84 1325 |
| X | = | ( | X | + | 5000 | ) | × | 84 1325 |
| 方程右边 = | X | × | 84 1325 | + | 5000 | × | 84 1325 |
| = | X | × | 84 1325 | + | 16800 53 |
| X | = | 84 1325 | X | + | 16800 53 |
| X | − | 84 1325 | X | = | 16800 53 |
1241 1325 | X | = | 16800 53 |
| X | = | 16800 53 | ÷ | 1241 1325 |
| = | 16800 53 | × | 1325 1241 |
| = | 16800 | × | 25 1241 |
| X | = | 420000 1241 |
| X | = | 338.436745 |