| ( | 24482 125 | − | x | ) | ÷ | ( | 400 | − | x | ) | = | 177 500 |
| 方程两边同时乘以: | ( | 400 | − | x | ) |
| ( | 24482 125 | − | x | ) | = | 177 500 | ( | 400 | − | x | ) |
24482 125 | − | x | = | 177 500 | ( | 400 | − | x | ) |
24482 125 | − | x | = | 177 500 | × | 400 | − | 177 500 | x |
24482 125 | − | x | = | 708 5 | − | 177 500 | x |
| - | x | + | 177 500 | x | = | 708 5 | − | 24482 125 |
| - | 323 500 | x | = | 708 5 | − | 24482 125 |
| - | 323 500 | x | = | - | 6782 125 |
6782 125 | = | 323 500 | x |
323 500 | x | = | 6782 125 |
| x | = | 6782 125 | ÷ | 323 500 |
| = | 6782 125 | × | 500 323 |
| = | 6782 | × | 4 323 |
| x | = | 27128 323 |
| x | = | 83.987616 |