| 102 | ( | X | + | 1 | ) | = | 85 | X | × | 204 |
| 方程左边 = | 102 | X | + | 102 | × | 1 |
| = | 102 | X | + | 102 |
| 102 | X | + | 102 | = | 85 | X | × | 204 |
| 方程右边 = | 17340 | X |
| 102 | X | + | 102 | = | 17340 | X |
| 102 | X | − | 17340 | X | = | - | 102 |
| - | 17238 | X | = | - | 102 |
| 102 | = | 17238 | X |
| 17238 | X | = | 102 |
| X | = | 102 | ÷ | 17238 |
| = | 102 | × | 1 17238 |
| = | 1 | × | 1 169 |
| X | = | 1 169 |
| X | = | 0.005917 |