| x | × | 2 | − | 133 4 | x | − | 4933 20 | = | 0 |
| 方程左边 = | - | 125 4 | x | − | 4933 20 |
| - | 125 4 | x | − | 4933 20 | = | 0 |
| - | 125 4 | x | = | 0 | + | 4933 20 |
| - | 125 4 | x | = | 4933 20 |
| - | 4933 20 | = | 125 4 | x |
125 4 | x | = | - | 4933 20 |
| x | = | - | 4933 20 | ÷ | 125 4 |
| = | - | 4933 20 | × | 4 125 |
| = | - | 4933 5 | × | 1 125 |
| x | = | - | 4933 625 |
| x | = | - 7.8928 |