| ( | 88 5 | − | x | ) | ÷ | x | = | - | 1619 10000 |
| 方程两边同时乘以: | x |
| ( | 88 5 | − | x | ) | = | - | 1619 10000 | x |
88 5 | − | x | = | - | 1619 10000 | x |
| - | x | + | 1619 10000 | x | = | - | 88 5 |
| - | 8381 10000 | x | = | - | 88 5 |
88 5 | = | 8381 10000 | x |
8381 10000 | x | = | 88 5 |
| x | = | 88 5 | ÷ | 8381 10000 |
| = | 88 5 | × | 10000 8381 |
| = | 88 | × | 2000 8381 |
| x | = | 176000 8381 |
| x | = | 20.999881 |