| - | 113 500 | = | - | 38 500 | + | x | + | ( | - | 38 500 | ) | x |
| 方程右边 = | - | 38 500 | + | x | − | 38 500 | x |
| = | - | 38 500 | + | 231 250 | x |
| - | 113 500 | = | - | 38 500 | + | 231 250 | x |
| - | 231 250 | x | = | - | 38 500 | + | 113 500 |
| - | 231 250 | x | = | 3 20 |
| - | 3 20 | = | 231 250 | x |
231 250 | x | = | - | 3 20 |
| x | = | - | 3 20 | ÷ | 231 250 |
| = | - | 3 20 | × | 250 231 |
| = | - | 1 2 | × | 25 77 |
| x | = | - | 25 154 |
| x | = | - 0.162338 |