| ( | 5297 100 | − | X | ) | ÷ | 750 | = | X | ÷ | 700 |
| 方程左边 = | 5297 100 | × | 1 750 | − | X | × | 1 750 |
| = | 5297 75000 | − | X | × | 1 750 |
5297 75000 | − | 1 750 | X | = | X | ÷ | 700 |
| - | 1 750 | X | − | 1 700 | X | = | - | 5297 75000 |
| - | 29 10500 | X | = | - | 5297 75000 |
5297 75000 | = | 29 10500 | X |
29 10500 | X | = | 5297 75000 |
| X | = | 5297 75000 | ÷ | 29 10500 |
| = | 5297 75000 | × | 10500 29 |
| = | 5297 50 | × | 7 29 |
| X | = | 37079 1450 |
| X | = | 25.571724 |