| ( | x | − | 21820 | ) | × | 10000 | ÷ | 254 | ÷ | 1000 | × | 3 10 | + | ( | x | − | 20055 | ) | ÷ | 20055 | × | 100 | × | 3 2 | = | 21 2 |
| 方程左边 = | ( | x | − | 21820 | ) | × | 3 254 | + | ( | x | − | 20055 | ) | × | 10 1337 |
| ( | x | − | 21820 | ) | × | 3 254 | + | ( | x | − | 20055 | ) | × | 10 1337 | = | 21 2 |
| 方程左边 = | x | × | 3 254 | − | 21820 | × | 3 254 | + | ( | x | − | 20055 | ) | × | 10 1337 |
| = | x | × | 3 254 | − | 32730 127 | + | ( | x | − | 20055 | ) | × | 10 1337 |
| = | 3 254 | x | − | 32730 127 | + | x | × | 10 1337 | − | 20055 | × | 10 1337 |
| = | 3 254 | x | − | 32730 127 | + | x | × | 10 1337 | − | 150 |
| = | 6551 339598 | x | − | 51780 127 |
6551 339598 | x | − | 51780 127 | = | 21 2 |
6551 339598 | x | = | 21 2 | + | 51780 127 |
6551 339598 | x | = | 106227 254 |
| x | = | 106227 254 | ÷ | 6551 339598 |
| = | 106227 254 | × | 339598 6551 |
| = | 106227 127 | × | 169799 6551 |
| x | = | 18037238373 831977 |