| ( | 10553 5 | − | y | ) | ÷ | y | = | 31 1000 |
| 方程两边同时乘以: | y |
| ( | 10553 5 | − | y | ) | = | 31 1000 | y |
10553 5 | − | y | = | 31 1000 | y |
| - | y | − | 31 1000 | y | = | - | 10553 5 |
| - | 1031 1000 | y | = | - | 10553 5 |
10553 5 | = | 1031 1000 | y |
1031 1000 | y | = | 10553 5 |
| y | = | 10553 5 | ÷ | 1031 1000 |
| = | 10553 5 | × | 1000 1031 |
| = | 10553 | × | 200 1031 |
| y | = | 2110600 1031 |
| y | = | 2047.1387 |