| 1560 | × | 9 25 | + | ( | 3600 | − | 1561 | ) | × | 9 20 | + | ( | 4680 | − | 3601 | ) | × | 49 100 | + | ( | x | − | 4680 | ) | × | 799 1000 | = | 23 50 | x |
| 方程左边 = | 2808 5 | + | ( | 3600 | − | 1561 | ) | × | 9 20 | + | ( | 4680 | − | 3601 | ) | × | 49 100 | + | ( | x | − | 4680 | ) | × | 799 1000 |
2808 5 | + | ( | 3600 | − | 1561 | ) | × | 9 20 | + | ( | 4680 | − | 3601 | ) | × | 49 100 | + | ( | x | − | 4680 | ) | × | 799 1000 | = | 23 50 | x |
| 方程左边 = | 2808 5 | + | 3600 | × | 9 20 | − | 1561 | × | 9 20 | + | ( | 4680 | − | 3601 | ) | × | 49 100 | + | ( | x | − | 4680 | ) | × | 799 1000 |
| = | 2808 5 | + | 1620 | − | 14049 20 | + | ( | 4680 | − | 3601 | ) | × | 49 100 | + | ( | x | − | 4680 | ) | × | 799 1000 |
| = | 29583 20 | + | ( | 4680 | − | 3601 | ) | × | 49 100 | + | ( | x | − | 4680 | ) | × | 799 1000 |
| = | 29583 20 | + | 4680 | × | 49 100 | − | 3601 | × | 49 100 | + | ( | x | − | 4680 | ) | × | 799 1000 |
| = | 29583 20 | + | 11466 5 | − | 176449 100 | + | ( | x | − | 4680 | ) | × | 799 1000 |
| = | 100393 50 | + | ( | x | − | 4680 | ) | × | 799 1000 |
| = | 100393 50 | + | x | × | 799 1000 | − | 4680 | × | 799 1000 |
| = | 100393 50 | + | x | × | 799 1000 | − | 93483 25 |
| = | - | 86573 50 | + | 799 1000 | x |
| - | 86573 50 | + | 799 1000 | x | = | 23 50 | x |
799 1000 | x | − | 23 50 | x | = | 86573 50 |
339 1000 | x | = | 86573 50 |
| x | = | 86573 50 | ÷ | 339 1000 |
| = | 86573 50 | × | 1000 339 |
| = | 86573 | × | 20 339 |
| x | = | 1731460 339 |
| x | = | 5107.551622 |