| ( | 50 | − | x | ÷ | 10 | ) | ( | 160 | + | x | ) | = | 9450 |
| 方程左边 = | 50 | ( | 160 | + | x | ) | − | x | ÷ | 10 | × | ( | 160 | + | x | ) |
| = | 50 | × | 160 | + | 50 | x | − | x | × | 1 10 | ( | 160 | + | x | ) |
| = | 8000 | + | 50 | x | − | x | × | 1 10 | ( | 160 | + | x | ) |
| = | 8000 | + | 50 | x | − | x | × | 1 10 | × | 160 | − | x | × | 1 10 | x |
| = | 8000 | + | 50 | x | − | x | × | 16 | − | x | × | 1 10 | x |
| = | 8000 | + | 34 | x | − | x | × | 1 10 | x |
| 8000 | + | 34 | x | − | x | × | 1 10 | x | = | 9450 |