| 1 | × | 11314 | = | 112 5 | × | 2400 | x | ( | 2120 | − | x | ÷ | 2 | ) |
| 方程左边 = | 11314 |
| 11314 | = | 112 5 | × | 2400 | x | ( | 2120 | − | x | ÷ | 2 | ) |
| 方程右边 = | 53760 | x | ( | 2120 | − | x | ÷ | 2 | ) |
| 11314 | = | 53760 | x | ( | 2120 | − | x | ÷ | 2 | ) |
| 方程右边 = | 53760 | x | × | 2120 | − | 53760 | x | x | ÷ | 2 |
| = | 113971200 | x | − | 26880 | x | x |
| 11314 | = | 113971200 | x | − | 26880 | x | x |