| ( | 1013 50 | − | 1013 50 | x | ) | ( | 1013 50 | − | 1013 50 | x | ) | ÷ | 1013 50 | × | x | = | 122 |
| 方程左边 = | 1013 50 | ( | 1013 50 | − | 1013 50 | x | ) | × | 50 1013 | x | − | 1013 50 | x | ( | 1013 50 | − | 1013 50 | x | ) | × | 50 1013 | x |
| = | 1013 1013 | ( | 1013 50 | − | 1013 50 | x | ) | x | − | 1013 1013 | x | ( | 1013 50 | − | 1013 50 | x | ) | x |
| = | 1013 1013 | × | 1013 50 | x | − | 1013 1013 | × | 1013 50 | x | x | − | 1013 1013 | x | ( | 1013 50 | − | 1013 50 | x | ) | x |
| = | 1026169 50650 | x | − | 1026169 50650 | x | x | − | 1013 1013 | x | ( | 1013 50 | − | 1013 50 | x | ) | x |
| = | 1026169 50650 | x | − | 1026169 50650 | x | x | − | 1013 1013 | x | × | 1013 50 | x | + | 1013 1013 | x | × | 1013 50 |
| = | 1026169 50650 | x | − | 1026169 50650 | x | x | − | 1026169 50650 | x | x | + | 1026169 50650 | x | x | x |
1026169 50650 | x | − | 1026169 50650 | x | x | − | 1026169 50650 | x | x | + | 1026169 50650 | x | x | x | = | 122 |