| 1 | ÷ | 2 | × | x | − | 7 | = | 9 | x | − | 2 | ÷ | 6 |
| 方程左边 = | 1 2 | x | − | 7 |
1 2 | x | − | 7 | = | 9 | x | − | 2 | ÷ | 6 |
| 方程右边 = | 9 | x | − | 1 3 |
1 2 | x | − | 7 | = | 9 | x | − | 1 3 |
1 2 | x | − | 9 | x | = | - | 1 3 | + | 7 |
| - | 17 2 | x | = | - | 1 3 | + | 7 |
| - | 17 2 | x | = | 20 3 |
| - | 20 3 | = | 17 2 | x |
17 2 | x | = | - | 20 3 |
| x | = | - | 20 3 | ÷ | 17 2 |
| = | - | 20 3 | × | 2 17 |
| x | = | - | 40 51 |
| x | = | - 0.784314 |