| ( | 1 50 | − | x | ) | × | 53777 10 | − | ( | 91 100 | + | x | ) | × | 267209 50 | = | 4271 200 |
| 方程左边 = | 1 50 | × | 53777 10 | − | x | × | 53777 10 | − | ( | 91 100 | + | x | ) | × | 267209 50 |
| = | 53777 500 | − | x | × | 53777 10 | − | ( | 91 100 | + | x | ) | × | 267209 50 |
| = | 53777 500 | − | 53777 10 | x | − | 91 100 | × | 267209 50 | − | x | × | 267209 50 |
| = | 53777 500 | − | 53777 10 | x | − | 24316019 5000 | − | x | × | 267209 50 |