| ( | 1 | + | x | ) | ÷ | ( | 1 | − | x | ) | = | 609 100 |
| Multiply both sides of the equation by: | ( | 1 | − | x | ) |
| ( | 1 | + | x | ) | = | 609 100 | ( | 1 | − | x | ) |
| 1 | + | x | = | 609 100 | ( | 1 | − | x | ) |
| 1 | + | x | = | 609 100 | × | 1 | − | 609 100 | x |
| 1 | + | x | = | 609 100 | − | 609 100 | x |
| x | + | 609 100 | x | = | 609 100 | − | 1 |
709 100 | x | = | 609 100 | − | 1 |
709 100 | x | = | 509 100 |
| x | = | 509 100 | ÷ | 709 100 |
| = | 509 100 | × | 100 709 |
| = | 509 | × | 1 709 |
| x | = | 509 709 |
| x | = | 0.717913 |