| 2800000 | + | 368197 10 | × | 1825 | x | + | ( | 240 | − | x | ) | × | 771377 50 | × | 1825 | = | 1825 | × | 300 | x |
| 方程左边 = | 2800000 | + | 134391905 2 | x | + | ( | 240 | − | x | ) | × | 56310521 2 |
| 2800000 | + | 134391905 2 | x | + | ( | 240 | − | x | ) | × | 56310521 2 | = | 1825 | × | 300 | x |
| 方程左边 = | 2800000 | + | 134391905 2 | x | + | 240 | × | 56310521 2 | − | x | × | 56310521 2 |