| x | − | ( | - | 1 | x | ) | = | 1 | ÷ | 4 | × | ( | 3 | − | x | ) |
| 方程左边 = | x | + | 1 | x |
| = | 2 | x |
| 2 | x | = | 1 | ÷ | 4 | × | ( | 3 | − | x | ) |
| 方程右边 = | 1 4 | ( | 3 | − | x | ) |
| 2 | x | = | 1 4 | ( | 3 | − | x | ) |
| 方程右边 = | 1 4 | × | 3 | − | 1 4 | x |
| = | 3 4 | − | 1 4 | x |
| 2 | x | = | 3 4 | − | 1 4 | x |
| 2 | x | + | 1 4 | x | = | 3 4 |
9 4 | x | = | 3 4 |
| x | = | 3 4 | ÷ | 9 4 |
| = | 3 4 | × | 4 9 |
| = | 1 | × | 1 3 |
| x | = | 1 3 |
| x | = | 0.333333 |