161687 100 | + | 1617 50 | + | 1 100 | K | + | 3549 100 | + | 1 5000 | K | = | 0 |
| 方程左边 = | 16847 10 | + | 51 5000 | K |
16847 10 | + | 51 5000 | K | = | 0 |
51 5000 | K | = | 0 | − | 16847 10 |
51 5000 | K | = | - | 16847 10 |
| K | = | - | 16847 10 | ÷ | 51 5000 |
| = | - | 16847 10 | × | 5000 51 |
| = | - | 991 | × | 500 3 |
| K | = | - | 495500 3 |
| K | = | - 165166.666667 |