143 10 | × | 300 | ( | 523 | − | 355 | + | 1 2 | X | ) | X | = | 360 | × | 1017 | × | 523 | − | 360 | × | 402 | × | 213 |
| 方程左边 = | 4290 | ( | 523 | − | 355 | + | 1 2 | X | ) | X |
| 4290 | ( | 523 | − | 355 | + | 1 2 | X | ) | X | = | 360 | × | 1017 | × | 523 | − | 360 | × | 402 | × | 213 |
| 方程左边 = | 4290 | × | 523 | X | − | 4290 | × | 355 | X | + | 4290 | × | 1 2 | X | X |
| = | 2243670 | X | − | 1522950 | X | + | 2145 | X | X |
| = | 720720 | X | + | 2145 | X | X |
| 720720 | X | + | 2145 | X | X | = | 360 | × | 1017 | × | 523 | − | 360 | × | 402 | × | 213 |
| 方程右边 = | 191480760 | − | 30825360 |
| = | 160655400 |
| 720720 | X | + | 2145 | X | X | = | 160655400 |