| x | ÷ | ( | 397 25000 | − | x | ) | = | 13 2500 |
| Multiply both sides of the equation by: | ( | 397 25000 | − | x | ) |
| x | = | 13 2500 | ( | 397 25000 | − | x | ) |
| x | = | 13 2500 | × | 397 25000 | − | 13 2500 | x |
| x | = | 5161 62500000 | − | 13 2500 | x |
| x | + | 13 2500 | x | = | 5161 62500000 |
2513 2500 | x | = | 5161 62500000 |
| x | = | 5161 62500000 | ÷ | 2513 2500 |
| = | 5161 62500000 | × | 2500 2513 |
| = | 5161 25000 | × | 1 2513 |
| x | = | 5161 62825000 |
| x | = | 0.000082 |