377 100 | ( | 9 100 | − | x | ) | ( | 4 25 | − | x | ) | = | 77 5000 | x |
| 方程左边 = | 377 100 | × | 9 100 | ( | 4 25 | − | x | ) | − | 377 100 | x | ( | 4 25 | − | x | ) |
| = | 3393 10000 | ( | 4 25 | − | x | ) | − | 377 100 | x | ( | 4 25 | − | x | ) |
| = | 3393 10000 | × | 4 25 | − | 3393 10000 | x | − | 377 100 | x | ( | 4 25 | − | x | ) |
| = | 3393 62500 | − | 3393 10000 | x | − | 377 100 | x | ( | 4 25 | − | x | ) |
| = | 3393 62500 | − | 3393 10000 | x | − | 377 100 | x | × | 4 25 | + | 377 100 | x | x |
| = | 3393 62500 | − | 3393 10000 | x | − | 377 625 | x | + | 377 100 | x | x |
| = | 3393 62500 | − | 377 400 | x | + | 377 100 | x | x |
3393 62500 | − | 377 400 | x | + | 377 100 | x | x | = | 77 5000 | x |