| ( | 2768 5 | − | y | ) | ÷ | y | = | 34 500 |
| 方程两边同时乘以: | y |
| ( | 2768 5 | − | y | ) | = | 34 500 | y |
2768 5 | − | y | = | 34 500 | y |
| - | y | − | 34 500 | y | = | - | 2768 5 |
| - | 267 250 | y | = | - | 2768 5 |
2768 5 | = | 267 250 | y |
267 250 | y | = | 2768 5 |
| y | = | 2768 5 | ÷ | 267 250 |
| = | 2768 5 | × | 250 267 |
| = | 2768 | × | 50 267 |
| y | = | 138400 267 |
| y | = | 518.35206 |