306740519 1250 | X | = | 142254481 1250 | ( | 1 | − | X | ) |
| 方程右边 = | 142254481 1250 | × | 1 | − | 142254481 1250 | X |
| = | 142254481 1250 | − | 142254481 1250 | X |
306740519 1250 | X | = | 142254481 1250 | − | 142254481 1250 | X |
306740519 1250 | X | + | 142254481 1250 | X | = | 142254481 1250 |
| 359196 | X | = | 142254481 1250 |
| X | = | 142254481 1250 | ÷ | 359196 |
| = | 142254481 1250 | × | 1 359196 |
| X | = | 142254481 448995000 |
| X | = | 0.316829 |