| 243 | = | ( | 10 | ( | 360 | + | X | ) | ) | ÷ | ( | ( | 10 | × | 360 | ) | ÷ | 239 | + | ( | 10 | X | ) | ÷ | 246 | ) |
| 方程两边同时乘以: | ( | ( | 10 | × | 360 | ) | ÷ | 239 | + | ( | 10 | X | ) | ÷ | 246 | ) |
| 243 | ( | ( | 10 | × | 360 | ) | ÷ | 239 | + | ( | 10 | X | ) | ÷ | 246 | ) | = | ( | 10 | ( | 360 | + | X | ) | ) |
| 243 | ( | 10 | × | 360 | ) | ÷ | 239 | + | 243 | ( | 10 | X | ) | ÷ | 246 | = | ( | 10 | ( | 360 | + | X | ) | ) |
| 243 | ( | 10 | × | 360 | ) | ÷ | 239 | + | 243 | ( | 10 | X | ) | ÷ | 246 | = | 10 | ( | 360 | + | X | ) |
243 239 | ( | 10 | × | 360 | ) | + | 81 82 | ( | 10 | X | ) | = | 10 | ( | 360 | + | X | ) |
243 239 | × | 10 | × | 360 | + | 81 82 | ( | 10 | X | ) | = | 10 | ( | 360 | + | X | ) |
243 239 | × | 10 | × | 360 | + | 81 82 | ( | 10 | X | ) | = | 10 | × | 360 | + | 10 | X |
874800 239 | + | 81 82 | ( | 10 | X | ) | = | 3600 | + | 10 | X |
874800 239 | + | 81 82 | × | 10 | X | = | 3600 | + | 10 | X |
874800 239 | + | 405 41 | X | = | 3600 | + | 10 | X |
405 41 | X | − | 10 | X | = | 3600 | − | 874800 239 |
| - | 5 41 | X | = | 3600 | − | 874800 239 |
| - | 5 41 | X | = | - | 14400 239 |
14400 239 | = | 5 41 | X |
5 41 | X | = | 14400 239 |
| X | = | 14400 239 | ÷ | 5 41 |
| = | 14400 239 | × | 41 5 |
| = | 2880 239 | × | 41 |
| X | = | 118080 239 |
| X | = | 494.058577 |