| 1 | − | ( | 3 10 | x | − | 1 | ) | ÷ | 1 5 | = | ( | 1 | + | x | ) | ÷ | 3 10 |
| 方程左边 = | 1 | − | 3 10 | x | × | 5 | + | 1 | × | 5 |
| = | 1 | − | 3 2 | x | + | 5 |
| = | 6 | − | 3 2 | x |
| 6 | − | 3 2 | x | = | ( | 1 | + | x | ) | ÷ | 3 10 |
| 方程右边 = | 1 | × | 10 3 | + | x | × | 10 3 |
| = | 10 3 | + | x | × | 10 3 |
| 6 | − | 3 2 | x | = | 10 3 | + | 10 3 | x |
| - | 3 2 | x | − | 10 3 | x | = | 10 3 | − | 6 |
| - | 29 6 | x | = | 10 3 | − | 6 |
| - | 29 6 | x | = | - | 8 3 |
8 3 | = | 29 6 | x |
29 6 | x | = | 8 3 |
| x | = | 8 3 | ÷ | 29 6 |
| = | 8 3 | × | 6 29 |
| = | 8 | × | 2 29 |
| x | = | 16 29 |
| x | = | 0.551724 |