| ( | 2 5 | x | − | 1 5 | ) | ÷ | 1 10 | = | ( | 13 10 | − | 2 | x | ) | ÷ | 3 10 |
| 方程左边 = | 2 5 | x | × | 10 | − | 1 5 | × | 10 |
| = | 4 | x | − | 2 |
| 4 | x | − | 2 | = | ( | 13 10 | − | 2 | x | ) | ÷ | 3 10 |
| 方程右边 = | 13 10 | × | 10 3 | − | 2 | x | × | 10 3 |
| = | 13 3 | − | 20 3 | x |
| 4 | x | − | 2 | = | 13 3 | − | 20 3 | x |
| 4 | x | + | 20 3 | x | = | 13 3 | + | 2 |
32 3 | x | = | 13 3 | + | 2 |
32 3 | x | = | 19 3 |
| x | = | 19 3 | ÷ | 32 3 |
| = | 19 3 | × | 3 32 |
| = | 19 | × | 1 32 |
| x | = | 19 32 |
| x | = | 0.59375 |