507389 10000 | = | X | ÷ | ( | 100 | + | X | ) | × | 100 100 |
| 方程两边同时乘以: | ( | 100 | + | X | ) |
507389 10000 | ( | 100 | + | X | ) | = | X | × | 100 100 |
507389 10000 | × | 100 | + | 507389 10000 | X | = | X | × | 100 100 |
507389 100 | + | 507389 10000 | X | = | X | × | 100 100 |
507389 10000 | X | − | 100 100 | X | = | - | 507389 100 |
497389 10000 | X | = | - | 507389 100 |
| X | = | - | 507389 100 | ÷ | 497389 10000 |
| = | - | 507389 100 | × | 10000 497389 |
| = | - | 507389 | × | 100 497389 |
| X | = | - | 50738900 497389 |
| X | = | - 102.010499 |