89 100 | = | x | ÷ | ( | x | + | ( | 1 | − | x | ) | × | 851 1000 | ) |
| 方程两边同时乘以: | ( | x | + | ( | 1 | − | x | ) | × | 851 1000 | ) |
89 100 | ( | x | + | ( | 1 | − | x | ) | × | 851 1000 | ) | = | x |
89 100 | x | + | 89 100 | ( | 1 | − | x | ) | × | 851 1000 | = | x |
89 100 | x | + | 75739 100000 | ( | 1 | − | x | ) | = | x |
89 100 | x | + | 75739 100000 | × | 1 | − | 75739 100000 | x | = | x |
89 100 | x | + | 75739 100000 | − | 75739 100000 | x | = | x |
13261 100000 | x | + | 75739 100000 | = | x |
13261 100000 | x | − | x | = | - | 75739 100000 |
| - | 86739 100000 | x | = | - | 75739 100000 |
75739 100000 | = | 86739 100000 | x |
86739 100000 | x | = | 75739 100000 |
| x | = | 75739 100000 | ÷ | 86739 100000 |
| = | 75739 100000 | × | 100000 86739 |
| = | 75739 | × | 1 86739 |
| x | = | 75739 86739 |
| x | = | 0.873183 |