| ( | X | − | 15274 | ) | × | 10000 | ÷ | 254 | ÷ | 1000 | × | 3 10 | + | ( | X | − | 15342 | ) | ÷ | 15342 | × | 100 | × | 3 2 | = | 21 2 |
| 方程左边 = | ( | X | − | 15274 | ) | × | 3 254 | + | ( | X | − | 15342 | ) | × | 25 2557 |
| ( | X | − | 15274 | ) | × | 3 254 | + | ( | X | − | 15342 | ) | × | 25 2557 | = | 21 2 |
| 方程左边 = | X | × | 3 254 | − | 15274 | × | 3 254 | + | ( | X | − | 15342 | ) | × | 25 2557 |
| = | X | × | 3 254 | − | 22911 127 | + | ( | X | − | 15342 | ) | × | 25 2557 |
| = | 3 254 | X | − | 22911 127 | + | X | × | 25 2557 | − | 15342 | × | 25 2557 |
| = | 3 254 | X | − | 22911 127 | + | X | × | 25 2557 | − | 383550 2557 |
| = | 14021 649478 | X | − | 107294277 324739 |
14021 649478 | X | − | 107294277 324739 | = | 21 2 |
14021 649478 | X | = | 21 2 | + | 107294277 324739 |
14021 649478 | X | = | 221408073 649478 |
| X | = | 221408073 649478 | ÷ | 14021 649478 |
| = | 221408073 649478 | × | 649478 14021 |
| = | 221408073 2557 | × | 2557 14021 |
| X | = | 566140442661 35851697 |