| - | 1 | ÷ | 8 | + | 7 | ÷ | 8 | × | x | = | - | 9 | ÷ | 17 | − | 2 | ÷ | 17 | × | x |
| 方程左边 = | - | 1 8 | + | 7 8 | x |
| - | 1 8 | + | 7 8 | x | = | - | 9 | ÷ | 17 | − | 2 | ÷ | 17 | × | x |
| 方程右边 = | - | 9 17 | − | 2 17 | x |
| - | 1 8 | + | 7 8 | x | = | - | 9 17 | − | 2 17 | x |
7 8 | x | + | 2 17 | x | = | - | 9 17 | + | 1 8 |
135 136 | x | = | - | 9 17 | + | 1 8 |
135 136 | x | = | - | 55 136 |
| x | = | - | 55 136 | ÷ | 135 136 |
| = | - | 55 136 | × | 136 135 |
| = | - | 11 | × | 1 27 |
| x | = | - | 11 27 |
| x | = | - 0.407407 |