| 9 | ÷ | 4 | × | x | − | 4 | = | 5 | ÷ | 2 | × | ( | x | − | 4 | ) |
| 方程左边 = | 9 4 | x | − | 4 |
9 4 | x | − | 4 | = | 5 | ÷ | 2 | × | ( | x | − | 4 | ) |
| 方程右边 = | 5 2 | ( | x | − | 4 | ) |
9 4 | x | − | 4 | = | 5 2 | ( | x | − | 4 | ) |
| 方程右边 = | 5 2 | x | − | 5 2 | × | 4 |
| = | 5 2 | x | − | 10 |
9 4 | x | − | 4 | = | 5 2 | x | − | 10 |
9 4 | x | − | 5 2 | x | = | - | 10 | + | 4 |
| - | 1 4 | x | = | - | 10 | + | 4 |
| - | 1 4 | x | = | - | 6 |
| 6 | = | 1 4 | x |
1 4 | x | = | 6 |
| x | = | 6 | ÷ | 1 4 |
| = | 6 | × | 4 |
| x | = | 24 |