| 100000 | ÷ | x | + | 1 | + | 1000 | = | 120000 | ÷ | x |
| Multiply both sides of the equation by: | x |
| 100000 | + | 1 | x | + | 1000 | x | = | 120000 | ÷ | 1 | × | 1 |
| 1 | x | + | 1000 | x | = | 120000 | ÷ | 1 | × | 1 | − | 100000 |
| 1 | x | + | 1000 | x | = | 120000 | − | 100000 |
| 1001 | x | = | 120000 | − | 100000 |
| 1001 | x | = | 20000 |
| x | = | 20000 | ÷ | 1001 |
| = | 20000 | × | 1 1001 |
| x | = | 20000 1001 |
| x | = | 19.98002 |