| x | ÷ | ( | 1 100 | − | x | ) | = | 3 100 |
| Multiply both sides of the equation by: | ( | 1 100 | − | x | ) |
| x | = | 3 100 | ( | 1 100 | − | x | ) |
| x | = | 3 100 | × | 1 100 | − | 3 100 | x |
| x | = | 3 10000 | − | 3 100 | x |
| x | + | 3 100 | x | = | 3 10000 |
103 100 | x | = | 3 10000 |
| x | = | 3 10000 | ÷ | 103 100 |
| = | 3 10000 | × | 100 103 |
| = | 3 100 | × | 1 103 |
| x | = | 3 10300 |
| x | = | 0.000291 |