| ( | 19 20 | × | 1409248947368421 25000000000 | − | 11559 25 | ) | − | 9 10 | ( | 19 20 | × | 1409248947368421 25000000000 | − | 11559 25 | − | 5000 | ) | = | x |
| 方程左边 = | 19 20 | × | 1409248947368421 25000000000 | − | 11559 25 | − | 9 10 | ( | 19 20 | × | 1409248947368421 25000000000 | − | 11559 25 | − | 5000 | ) |
| x= | 980891 100 |