| 27 | x | × | 2 | − | 27 5 | x | + | 27 100 | = | 27 10000 |
| 方程左边 = | 54 | x | − | 27 5 | x | + | 27 100 |
| = | 243 5 | x | + | 27 100 |
243 5 | x | + | 27 100 | = | 27 10000 |
243 5 | x | = | 27 10000 | − | 27 100 |
243 5 | x | = | - | 2673 10000 |
| x | = | - | 2673 10000 | ÷ | 243 5 |
| = | - | 2673 10000 | × | 5 243 |
| = | - | 11 2000 | × | 1 |
| x | = | - | 11 2000 |
| x | = | - 0.0055 |