187 200 | ( | X | + | 137 | ) | = | X |
| 方程左边 = | 187 200 | X | + | 187 200 | × | 137 |
| = | 187 200 | X | + | 25619 200 |
187 200 | X | + | 25619 200 | = | X |
187 200 | X | − | X | = | - | 25619 200 |
| - | 13 200 | X | = | - | 25619 200 |
25619 200 | = | 13 200 | X |
13 200 | X | = | 25619 200 |
| X | = | 25619 200 | ÷ | 13 200 |
| = | 25619 200 | × | 200 13 |
| = | 25619 | × | 1 13 |
| X | = | 25619 13 |
| X | = | 1970.692308 |