| 500000 | ÷ | ( | x | − | 50 | ) | × | ( | 2 | x | − | 100 | ) | ( | 2 | x | − | 100 | ) | = | 19 3125 |
| 方程两边同时乘以: | ( | x | − | 50 | ) |
| 500000 | ( | 2 | x | − | 100 | ) | ( | 2 | x | − | 100 | ) | = | 19 3125 | ( | x | − | 50 | ) |
| 500000 | × | 2 | x | ( | 2 | x | − | 100 | ) | − | 500000 | × | 100 | ( | 2 | x | − | 100 | ) | = | 19 3125 | ( | x | − | 50 | ) |
| 500000 | × | 2 | x | ( | 2 | x | − | 100 | ) | − | 500000 | × | 100 | ( | 2 | x | − | 100 | ) | = | 19 3125 | x | − | 19 3125 | × | 50 |
| 1000000 | x | ( | 2 | x | − | 100 | ) | − | 50000000 | ( | 2 | x | − | 100 | ) | = | 19 3125 | x | − | 38 125 |
| 1000000 | x | × | 2 | x | − | 1000000 | x | × | 100 | − | 50000000 | ( | 2 | x | − | 100 | ) | = | 19 3125 | x | − | 38 125 |
| 2000000 | x | x | − | 100000000 | x | − | 50000000 | ( | 2 | x | − | 100 | ) | = | 19 3125 | x | − | 38 125 |
| 2000000 | x | x | − | 100000000 | x | − | 50000000 | × | 2 | x | + | 50000000 | × | 100 | = | 19 3125 | x | − | 38 125 |
| 2000000 | x | x | − | 100000000 | x | − | 100000000 | x | + | 5000000000 | = | 19 3125 | x | − | 38 125 |
| 2000000 | x | x | − | 200000000 | x | + | 5000000000 | = | 19 3125 | x | − | 38 125 |