| ( | 5325 | − | y | ) | ÷ | y | = | 2 100 |
| Multiply both sides of the equation by: | y |
| ( | 5325 | − | y | ) | = | 2 100 | y |
| 5325 | − | y | = | 2 100 | y |
| - | y | − | 2 100 | y | = | - | 5325 |
| - | 51 50 | y | = | - | 5325 |
| 5325 | = | 51 50 | y |
51 50 | y | = | 5325 |
| y | = | 5325 | ÷ | 51 50 |
| = | 5325 | × | 50 51 |
| = | 1775 | × | 50 17 |
| y | = | 88750 17 |
| y | = | 5220.588235 |