| x | ÷ | ( | x | + | 2128512 25 | ) | = | 1 5 |
| Multiply both sides of the equation by: | ( | x | + | 2128512 25 | ) |
| x | = | 1 5 | ( | x | + | 2128512 25 | ) |
| x | = | 1 5 | x | + | 1 5 | × | 2128512 25 |
| x | = | 1 5 | x | + | 2128512 125 |
| x | − | 1 5 | x | = | 2128512 125 |
4 5 | x | = | 2128512 125 |
| x | = | 2128512 125 | ÷ | 4 5 |
| = | 2128512 125 | × | 5 4 |
| = | 532128 25 | × | 1 |
| x | = | 532128 25 |
| x | = | 21285.12 |