| ( | 53047 10 | − | y | ) | ÷ | y | = | 13 500 |
| 方程两边同时乘以: | y |
| ( | 53047 10 | − | y | ) | = | 13 500 | y |
53047 10 | − | y | = | 13 500 | y |
| - | y | − | 13 500 | y | = | - | 53047 10 |
| - | 513 500 | y | = | - | 53047 10 |
53047 10 | = | 513 500 | y |
513 500 | y | = | 53047 10 |
| y | = | 53047 10 | ÷ | 513 500 |
| = | 53047 10 | × | 500 513 |
| = | 53047 | × | 50 513 |
| y | = | 2652350 513 |
| y | = | 5170.272904 |