| ( | 25846 5 | − | y | ) | ÷ | y | = | 11 500 |
| 方程两边同时乘以: | y |
| ( | 25846 5 | − | y | ) | = | 11 500 | y |
25846 5 | − | y | = | 11 500 | y |
| - | y | − | 11 500 | y | = | - | 25846 5 |
| - | 511 500 | y | = | - | 25846 5 |
25846 5 | = | 511 500 | y |
511 500 | y | = | 25846 5 |
| y | = | 25846 5 | ÷ | 511 500 |
| = | 25846 5 | × | 500 511 |
| = | 25846 | × | 100 511 |
| y | = | 2584600 511 |
| y | = | 5057.925636 |