| ( | 51483 10 | − | y | ) | ÷ | y | = | 2 100 |
| Multiply both sides of the equation by: | y |
| ( | 51483 10 | − | y | ) | = | 2 100 | y |
51483 10 | − | y | = | 2 100 | y |
| - | y | − | 2 100 | y | = | - | 51483 10 |
| - | 51 50 | y | = | - | 51483 10 |
51483 10 | = | 51 50 | y |
51 50 | y | = | 51483 10 |
| y | = | 51483 10 | ÷ | 51 50 |
| = | 51483 10 | × | 50 51 |
| = | 17161 | × | 5 17 |
| y | = | 85805 17 |
| y | = | 5047.352941 |