| 0 | = | ( | 2 | × | 157 50 | × | 100 | x | − | 1 | ÷ | ( | 2 | × | 157 50 | x | × | 1 1000 | ) | ) |
| 0 | = | 2 | × | 157 50 | × | 100 | x | − | 1 | ÷ | ( | 2 | × | 157 50 | x | × | 1 1000 | ) |
| 0 | = | 628 | x | − | 1 | ÷ | ( | 2 | × | 157 50 | x | × | 1 1000 | ) |
| 方程两边同时乘以: | ( | 2 | × | 157 50 | x | × | 1 1000 | ) |
| 0 | = | 628 | x | ( | 2 | × | 157 50 | x | × | 1 1000 | ) | − | 1 |
| 0 | = | 628 | x | × | 2 | × | 157 50 | x | × | 1 1000 | − | 1 |
| 0 | = | 24649 6250 | x | x | − | 1 |