| 1 | + | 3 2 | X | ÷ | 180 | − | X | = | X | ÷ | 180 | − | 3 | ÷ | 2 |
| 方程左边 = | 1 | + | 1 120 | X | − | X |
| = | 1 | − | 119 120 | X |
| 1 | − | 119 120 | X | = | X | ÷ | 180 | − | 3 | ÷ | 2 |
| 方程右边 = | X | × | 1 180 | − | 3 2 |
| 1 | − | 119 120 | X | = | 1 180 | X | − | 3 2 |
| - | 119 120 | X | − | 1 180 | X | = | - | 3 2 | − | 1 |
| - | 359 360 | X | = | - | 3 2 | − | 1 |
| - | 359 360 | X | = | - | 5 2 |
5 2 | = | 359 360 | X |
359 360 | X | = | 5 2 |
| X | = | 5 2 | ÷ | 359 360 |
| = | 5 2 | × | 360 359 |
| = | 5 | × | 180 359 |
| X | = | 900 359 |
| X | = | 2.506964 |