4157 500 | × | 523 | ( | 1 2 | − | 327 15625 | ) | ( | 3 5 | − | 327 15625 | ) | = | x | × | 200 | ( | 1 5 | + | 327 15625 | ) |
| 方程左边 = | 2174111 500 | ( | 1 2 | − | 327 15625 | ) | ( | 3 5 | − | 327 15625 | ) |
2174111 500 | ( | 1 2 | − | 327 15625 | ) | ( | 3 5 | − | 327 15625 | ) | = | x | × | 200 | ( | 1 5 | + | 327 15625 | ) |
| 方程左边 = | 2174111 500 | × | 1 2 | ( | 3 5 | − | 327 15625 | ) | − | 2174111 500 | × | 327 15625 | ( | 3 5 | − | 327 15625 | ) |
| = | 2174111 1000 | ( | 3 5 | − | 327 15625 | ) | − | 710934297 7812500 | ( | 3 5 | − | 327 15625 | ) |
| = | 2174111 1000 | × | 3 5 | − | 2174111 1000 | × | 327 15625 | − | 710934297 7812500 | ( | 3 5 | − | 327 15625 | ) |
| = | 6522333 5000 | − | 710934297 15625000 | − | 710934297 7812500 | ( | 3 5 | − | 327 15625 | ) |