| 8 | − | 3 | ÷ | 5 | × | x | = | 15 2 | − | 3 | ÷ | 2 | × | x |
| 方程左边 = | 8 | − | 3 5 | x |
| 8 | − | 3 5 | x | = | 15 2 | − | 3 | ÷ | 2 | × | x |
| 方程右边 = | 15 2 | − | 3 2 | x |
| 8 | − | 3 5 | x | = | 15 2 | − | 3 2 | x |
| - | 3 5 | x | + | 3 2 | x | = | 15 2 | − | 8 |
9 10 | x | = | 15 2 | − | 8 |
9 10 | x | = | - | 1 2 |
| x | = | - | 1 2 | ÷ | 9 10 |
| = | - | 1 2 | × | 10 9 |
| = | - | 1 | × | 5 9 |
| x | = | - | 5 9 |
| x | = | - 0.555556 |