| x | ÷ | ( | 50 | + | x | ) | = | 1 1000 |
| Multiply both sides of the equation by: | ( | 50 | + | x | ) |
| x | = | 1 1000 | ( | 50 | + | x | ) |
| x | = | 1 1000 | × | 50 | + | 1 1000 | x |
| x | = | 1 20 | + | 1 1000 | x |
| x | − | 1 1000 | x | = | 1 20 |
999 1000 | x | = | 1 20 |
| x | = | 1 20 | ÷ | 999 1000 |
| = | 1 20 | × | 1000 999 |
| = | 1 | × | 50 999 |
| x | = | 50 999 |
| x | = | 0.05005 |