| 68640 | x | x | ÷ | ( | 1200 | − | x | ) | + | 7389024 5 | ( | x | − | 49 | ) | ÷ | ( | 1200 | − | x | ) | = | 2596435 |
| 方程两边同时乘以: | ( | 1200 | − | x | ) |
| 68640 | x | x | + | 7389024 5 | ( | x | − | 49 | ) | = | 2596435 | ( | 1200 | − | x | ) |
| 68640 | x | x | + | 7389024 5 | x | − | 7389024 5 | × | 49 | = | 2596435 | ( | 1200 | − | x | ) |
| 68640 | x | x | + | 7389024 5 | x | − | 7389024 5 | × | 49 | = | 2596435 | × | 1200 | − | 2596435 | x |
| 68640 | x | x | + | 7389024 5 | x | − | 362062176 5 | = | 3115722000 | − | 2596435 | x |