3 10 | x | − | 2 5 | ÷ | 1 5 | + | 2 | = | 1 2 | x | − | 1 5 | ÷ | 3 10 |
| 方程左边 = | 3 10 | x | − | 2 | + | 2 |
| = | 3 10 | x | − | 0 |
3 10 | x | − | 0 | = | 1 2 | x | − | 1 5 | ÷ | 3 10 |
| 方程右边 = | 1 2 | x | − | 2 3 |
3 10 | x | − | 0 | = | 1 2 | x | − | 2 3 |
3 10 | x | − | 1 2 | x | = | - | 2 3 |
| - | 1 5 | x | = | - | 2 3 |
2 3 | = | 1 5 | x |
1 5 | x | = | 2 3 |
| x | = | 2 3 | ÷ | 1 5 |
| = | 2 3 | × | 5 |
| x | = | 10 3 |
| x | = | 3.333333 |