| ( | x | − | 216911 100 | × | 12 | ) | − | ( | x | − | ( | 2169 | × | 12 | ) | − | 60000 | ) | × | 9 20 | − | 181920 | = | 10000000 |
| 方程左边 = | x | − | 216911 100 | × | 12 | − | ( | x | − | ( | 2169 | × | 12 | ) | − | 60000 | ) | × | 9 20 | − | 181920 |
| = | x | − | 650733 25 | − | ( | x | − | ( | 2169 | × | 12 | ) | − | 60000 | ) | × | 9 20 | − | 181920 |
| = | x | − | 5198733 25 | − | ( | x | − | ( | 2169 | × | 12 | ) | − | 60000 | ) | × | 9 20 |
| = | x | − | 5198733 25 | − | x | × | 9 20 | + | ( | 2169 | × | 12 | ) | × | 9 20 | + | 60000 | × | 9 20 |
| = | x | − | 5198733 25 | − | x | × | 9 20 | + | ( | 2169 | × | 12 | ) | × | 9 20 | + | 27000 |
| = | 11 20 | x | − | 4523733 25 | + | ( | 2169 | × | 12 | ) | × | 9 20 |
| = | 11 20 | x | − | 4523733 25 | + | 2169 | × | 12 | × | 9 20 |
| = | 11 20 | x | − | 4523733 25 | + | 58563 5 |
| = | 11 20 | x | − | 4230918 25 |
11 20 | x | − | 4230918 25 | = | 10000000 |
11 20 | x | = | 10000000 | + | 4230918 25 |
11 20 | x | = | 254230918 25 |
| x | = | 254230918 25 | ÷ | 11 20 |
| = | 254230918 25 | × | 20 11 |
| = | 254230918 5 | × | 4 11 |
| x | = | 1016923672 55 |
| x | = | 18489521.309091002 |