| ( | X | − | 2603621947 100 | ) | ÷ | X | = | 2 25 |
| 方程两边同时乘以: | X |
| ( | X | − | 2603621947 100 | ) | = | 2 25 | X |
| X | − | 2603621947 100 | = | 2 25 | X |
| X | − | 2 25 | X | = | 2603621947 100 |
23 25 | X | = | 2603621947 100 |
| X | = | 2603621947 100 | ÷ | 23 25 |
| = | 2603621947 100 | × | 25 23 |
| = | 2603621947 4 | × | 1 23 |
| X | = | 2603621947 92 |
| X | = | 28300238.554347999 |