| 68640 | x | ( | x | ÷ | ( | 1200 | − | x | ) | ) | + | 7389024 5 | ( | x | − | 49 | ) | ÷ | ( | 1200 | − | x | ) | = | 2956795 |
| 方程两边同时乘以: | ( | 1200 | − | x | ) |
| 68640 | x | ( | x | ÷ | ( | 1200 | − | x | ) | ) | ( | 1200 | − | x | ) | + | 7389024 5 | ( | x | − | 49 | ) | = | 2956795 | ( | 1200 | − | x | ) |
| 68640 | x | x | ÷ | ( | 1200 | − | x | ) | × | ( | 1200 | − | x | ) | + | 7389024 5 | ( | x | − | 49 | ) | = | 2956795 | ( | 1200 | − | x | ) |
| 68640 | x | x | ÷ | ( | 1200 | − | x | ) | × | ( | 1200 | − | x | ) | + | 7389024 5 | ( | x | − | 49 | ) | = | 2956795 | × | 1200 | − | 2956795 | x |
| 68640 | x | x | ÷ | ( | 1200 | − | x | ) | × | ( | 1200 | − | x | ) | + | 7389024 5 | ( | x | − | 49 | ) | = | 3548154000 | − | 2956795 | x |
| 方程两边同时乘以: | ( | 1200 | − | x | ) |
| 68640 | x | x | ( | 1200 | − | x | ) | + | 7389024 5 | ( | x | − | 49 | ) | ( | 1200 | − | x | ) | = | 3548154000 | ( | 1200 | − | x | ) | − | 2956795 | x | ( | 1200 | − | x | ) |
| 68640 | x | x | × | 1200 | − | 68640 | x | x | x | + | 7389024 5 | ( | x | − | 49 | ) | ( | 1200 | − | x | ) | = | 3548154000 | ( | 1200 | − | x | ) | − | 2956795 | x | ( | 1200 | − | x | ) |
| 68640 | x | x | × | 1200 | − | 68640 | x | x | x | + | 7389024 5 | ( | x | − | 49 | ) | ( | 1200 | − | x | ) | = | 3548154000 | × | 1200 | − | 3548154000 | x | − | 2956795 | x | ( | 1200 | − | x | ) |