| ( | 943 | − | X | ) | ÷ | X | = | - | 2389 10000 |
| 方程两边同时乘以: | X |
| ( | 943 | − | X | ) | = | - | 2389 10000 | X |
| 943 | − | X | = | - | 2389 10000 | X |
| - | X | + | 2389 10000 | X | = | - | 943 |
| - | 7611 10000 | X | = | - | 943 |
| 943 | = | 7611 10000 | X |
7611 10000 | X | = | 943 |
| X | = | 943 | ÷ | 7611 10000 |
| = | 943 | × | 10000 7611 |
| X | = | 9430000 7611 |
| X | = | 1238.99619 |