| 9 | ÷ | 10 | = | x | − | 5 | ÷ | 5 | ÷ | 4 | × | x | − | 10 |
| 方程左边 = | 9 10 |
9 10 | = | x | − | 5 | ÷ | 5 | ÷ | 4 | × | x | − | 10 |
| 方程右边 = | x | − | 1 4 | x | − | 10 |
| = | 3 4 | x | − | 10 |
9 10 | = | 3 4 | x | − | 10 |
| - | 3 4 | x | = | - | 10 | − | 9 10 |
| - | 3 4 | x | = | - | 109 10 |
109 10 | = | 3 4 | x |
3 4 | x | = | 109 10 |
| x | = | 109 10 | ÷ | 3 4 |
| = | 109 10 | × | 4 3 |
| = | 109 5 | × | 2 3 |
| x | = | 218 15 |
| x | = | 14.533333 |