| ( | 3311 | − | x | ) | ÷ | ( | 5581 | − | x | ) | = | 51 100 |
| Multiply both sides of the equation by: | ( | 5581 | − | x | ) |
| ( | 3311 | − | x | ) | = | 51 100 | ( | 5581 | − | x | ) |
| 3311 | − | x | = | 51 100 | ( | 5581 | − | x | ) |
| 3311 | − | x | = | 51 100 | × | 5581 | − | 51 100 | x |
| 3311 | − | x | = | 284631 100 | − | 51 100 | x |
| - | x | + | 51 100 | x | = | 284631 100 | − | 3311 |
| - | 49 100 | x | = | 284631 100 | − | 3311 |
| - | 49 100 | x | = | - | 46469 100 |
46469 100 | = | 49 100 | x |
49 100 | x | = | 46469 100 |
| x | = | 46469 100 | ÷ | 49 100 |
| = | 46469 100 | × | 100 49 |
| = | 46469 | × | 1 49 |
| x | = | 46469 49 |
| x | = | 948.346939 |