| ( | 53846281 | − | X | ) | ÷ | X | = | 151 2000 |
| 方程两边同时乘以: | X |
| ( | 53846281 | − | X | ) | = | 151 2000 | X |
| 53846281 | − | X | = | 151 2000 | X |
| - | X | − | 151 2000 | X | = | - | 53846281 |
| - | 2151 2000 | X | = | - | 53846281 |
| 53846281 | = | 2151 2000 | X |
2151 2000 | X | = | 53846281 |
| X | = | 53846281 | ÷ | 2151 2000 |
| = | 53846281 | × | 2000 2151 |
| X | = | 107692562000 2151 |