| ( | 13108 5 | − | y | ) | ÷ | y | = | 5 200 |
| 方程两边同时乘以: | y |
| ( | 13108 5 | − | y | ) | = | 5 200 | y |
13108 5 | − | y | = | 5 200 | y |
| - | y | − | 5 200 | y | = | - | 13108 5 |
| - | 41 40 | y | = | - | 13108 5 |
13108 5 | = | 41 40 | y |
41 40 | y | = | 13108 5 |
| y | = | 13108 5 | ÷ | 41 40 |
| = | 13108 5 | × | 40 41 |
| = | 13108 | × | 8 41 |
| y | = | 104864 41 |
| y | = | 2557.658537 |