| ( | 193718 | − | x | ) | ÷ | x | × | 100 100 | = | 0 |
| 方程两边同时乘以: | x |
| ( | 193718 | − | x | ) | × | 100 100 | = | 0 |
| 193718 | × | 100 100 | − | x | × | 100 100 | = | 0 |
| 193718 | − | x | × | 100 100 | = | 0 |
| - | 100 100 | x | = | 0 | − | 193718 |
| - | 100 100 | x | = | - | 193718 |
| 193718 | = | 100 100 | x |
100 100 | x | = | 193718 |
| = | 193718 | × | 100 100 |
| = | 96859 | × | 100 50 |
| x | = | 9685900 50 |
| x | = | 193718 |