| ( | 27 10 | x | ) | ÷ | ( | 27 10 | + | x | ) | = | 1 |
| 方程两边同时乘以: | ( | 27 10 | + | x | ) |
| ( | 27 10 | x | ) | = | 1 | ( | 27 10 | + | x | ) |
27 10 | x | = | 1 | ( | 27 10 | + | x | ) |
27 10 | x | = | 1 | × | 27 10 | + | 1 | x |
27 10 | x | = | 27 10 | + | 1 | x |
27 10 | x | − | 1 | x | = | 27 10 |
17 10 | x | = | 27 10 |
| x | = | 27 10 | ÷ | 17 10 |
| = | 27 10 | × | 10 17 |
| = | 27 | × | 1 17 |
| x | = | 27 17 |
| x | = | 1.588235 |