| ( | x | − | 936 | ) | ÷ | 936 | − | ( | x | − | 1000 | ) | ÷ | 1000 | = | 4 5 |
| 方程左边 = | x | × | 1 936 | − | 936 | × | 1 936 | − | ( | x | − | 1000 | ) | × | 1 1000 |
| = | x | × | 1 936 | − | 1 | − | ( | x | − | 1000 | ) | × | 1 1000 |
| = | 1 936 | x | − | 1 | − | x | × | 1 1000 | + | 1000 | × | 1 1000 |
| = | 1 936 | x | − | 1 | − | x | × | 1 1000 | + | 1 |
| = | 1 14625 | x | − | 0 |
1 14625 | x | = | 4 5 |
| x | = | 4 5 | ÷ | 1 14625 |
| = | 4 5 | × | 14625 |
| = | 4 | × | 2925 |
| x | = | 11700 |