| ( | 76 | − | 4 | x | ) | x | ( | 8 | + | 2 | x | ) | = | 1024 |
| 方程左边 = | 76 | x | ( | 8 | + | 2 | x | ) | − | 4 | x | x | ( | 8 | + | 2 | x | ) |
| = | 76 | x | × | 8 | + | 76 | x | × | 2 | x | − | 4 | x | x | ( | 8 | + | 2 | x | ) |
| = | 608 | x | + | 152 | x | x | − | 4 | x | x | ( | 8 | + | 2 | x | ) |
| = | 608 | x | + | 152 | x | x | − | 4 | x | x | × | 8 | − | 4 | x | x |
| = | 608 | x | + | 152 | x | x | − | 32 | x | x | − | 8 | x | x | x |
| 608 | x | + | 152 | x | x | − | 32 | x | x | − | 8 | x | x | x | = | 1024 |