| - | 8 | x | ÷ | 1 200 | ÷ | 1 200 | × | 1 20 | × | 1 20 | × | 1 20 | × | 1 20 | = | 128 | x | − | 64 | × | 8000 |
| Left side of the equation = | - | 2 | x |
| - | 2 | x | = | 128 | x | − | 64 | × | 8000 |
| Right side of the equation = | 128 | x | − | 512000 |
| - | 2 | x | = | 128 | x | − | 512000 |
| - | 2 | x | − | 128 | x | = | - | 512000 |
| - | 130 | x | = | - | 512000 |
| 512000 | = | 130 | x |
| 130 | x | = | 512000 |
| x | = | 512000 | ÷ | 130 |
| = | 512000 | × | 1 130 |
| = | 51200 | × | 1 13 |
| x | = | 51200 13 |
| x | = | 3938.461538 |