| ( | 403 25 | − | X | ) | ÷ | X | = | 373 100 |
| 方程两边同时乘以: | X |
| ( | 403 25 | − | X | ) | = | 373 100 | X |
403 25 | − | X | = | 373 100 | X |
| - | X | − | 373 100 | X | = | - | 403 25 |
| - | 473 100 | X | = | - | 403 25 |
403 25 | = | 473 100 | X |
473 100 | X | = | 403 25 |
| X | = | 403 25 | ÷ | 473 100 |
| = | 403 25 | × | 100 473 |
| = | 403 | × | 4 473 |
| X | = | 1612 473 |
| X | = | 3.408034 |