| 250 | ( | 32 | + | 8 | x | + | x | x | ) | = | ( | - | 529 | + | 22 | x | + | x | x | ) | ( | - | 529 | + | 22 | x | + | x | x | ) |
| 方程左边 = | 250 | × | 32 | + | 250 | × | 8 | x | + | 250 | x | x |
| = | 8000 | + | 2000 | x | + | 250 | x | x |
| 8000 | + | 2000 | x | + | 250 | x | x | = | ( | - | 529 | + | 22 | x | + | x | x | ) | ( | - | 529 | + | 22 | x | + | x | x | ) |
| 方程右边 = | - | 529 | ( | - | 529 | + | 22 | x | + | x | x | ) | + | 22 | x | ( | - | 529 | + | 22 | x | + | x | x | ) | + | x | x | ( | - | 529 | + | 22 | x | + | x | x | ) |
| = | 529 | × | 529 | − | 529 | × | 22 | x | − | 529 | x | x | + | 22 | x | ( | - | 529 | + | 22 | x | + | x | x | ) | + | x |
| = | 279841 | − | 11638 | x | − | 529 | x | x | + | 22 | x | ( | - | 529 | + | 22 | x | + | x | x | ) | + | x | x | ( | - | 529 | + | 22 | x | + | x | x | ) |
| = | 279841 | − | 11638 | x | − | 529 | x | x | − | 22 | x | × | 529 | + | 22 | x | × | 22 |
| = | 279841 | − | 11638 | x | − | 529 | x | x | − | 11638 | x | + | 484 | x | x | + | 22 |
| = | 279841 | − | 23276 | x | − | 529 | x | x | + | 484 | x | x | + | 22 | x | x |
| = | 279841 | − | 23276 | x | − | 529 | x | x | + | 484 | x | x | + | 22 | x | x |
| 8000 | + | 2000 | x | + | 250 | x | x | = | 279841 | − | 23276 | x | − | 529 | x | x | + | 484 | x | x | + | 22 | x | x |