| ( | 389 | − | x | ) | ÷ | 333 | = | - | 11 10000 |
| 方程左边 = | 389 | × | 1 333 | − | x | × | 1 333 |
| = | 389 333 | − | x | × | 1 333 |
389 333 | − | 1 333 | x | = | - | 11 10000 |
| - | 1 333 | x | = | - | 11 10000 | − | 389 333 |
| - | 1 333 | x | = | - | 3893663 3330000 |
3893663 3330000 | = | 1 333 | x |
1 333 | x | = | 3893663 3330000 |
| x | = | 3893663 3330000 | ÷ | 1 333 |
| = | 3893663 3330000 | × | 333 |
| = | 3893663 10000 | × | 1 |
| x | = | 3893663 10000 |
| x | = | 389.3663 |