| x | ÷ | ( | 1 25 | − | x | ) | × | ( | 6 5 | − | 2 | x | ) | ( | 6 5 | − | 2 | x | ) | = | 16200000 |
| 方程两边同时乘以: | ( | 1 25 | − | x | ) |
| x | ( | 6 5 | − | 2 | x | ) | ( | 6 5 | − | 2 | x | ) | = | 16200000 | ( | 1 25 | − | x | ) |
| x | × | 6 5 | ( | 6 5 | − | 2 | x | ) | − | x | × | 2 | x | ( | 6 5 | − | 2 | x | ) | = | 16200000 | ( | 1 25 | − | x | ) |
| x | × | 6 5 | ( | 6 5 | − | 2 | x | ) | − | x | × | 2 | x | ( | 6 5 | − | 2 | x | ) | = | 16200000 | × | 1 25 | − | 16200000 | x |
| x | × | 6 5 | ( | 6 5 | − | 2 | x | ) | − | x | × | 2 | x | ( | 6 5 | − | 2 | x | ) | = | 648000 | − | 16200000 | x |
| x | × | 6 5 | × | 6 5 | − | x | × | 6 5 | × | 2 | x | − | x | × | 2 | x | ( | 6 5 | − | 2 | x | ) | = | 648000 | − | 16200000 | x |
| x | × | 36 25 | − | x | × | 12 5 | x | − | x | × | 2 | x | ( | 6 5 | − | 2 | x | ) | = | 648000 | − | 16200000 | x |
36 25 | x | − | x | × | 12 5 | x | − | x | × | 2 | x | × | 6 5 | + | x | × | 2 | x | = | 648000 | − | 16200000 | x |
36 25 | x | − | x | × | 12 5 | x | − | x | × | 12 5 | x | + | x | × | 4 | x | x | = | 648000 | − | 16200000 | x |