729 20 | ( | 1 | − | x | ) | = | 457 50 |
| Left side of the equation = | 729 20 | × | 1 | − | 729 20 | x |
| = | 729 20 | − | 729 20 | x |
729 20 | − | 729 20 | x | = | 457 50 |
| - | 729 20 | x | = | 457 50 | − | 729 20 |
| - | 729 20 | x | = | - | 2731 100 |
2731 100 | = | 729 20 | x |
729 20 | x | = | 2731 100 |
| x | = | 2731 100 | ÷ | 729 20 |
| = | 2731 100 | × | 20 729 |
| = | 2731 5 | × | 1 729 |
| x | = | 2731 3645 |
| x | = | 0.749246 |