| 2 | ÷ | x | + | 1 | ÷ | ( | 2 | + | x | ) | + | 1 | ÷ | ( | 5 | + | x | ) | = | 1 | ÷ | ( | x | + | 1 2 | ) |
| 方程两边同时乘以: | x | , | ( | x | + | 1 2 | ) |
| 2 | ( | x | + | 1 2 | ) | + | 1 | ÷ | ( | 2 | + | x | ) | × | x | ( | x | + | 1 2 | ) | + | 1 | ÷ | ( | 5 | + | x | ) | × | x | ( | x | + | 1 2 | ) | = | 1 | x |
| 2 | x | + | 2 | × | 1 2 | + | 1 | ÷ | ( | 2 | + | x | ) | × | x | ( | x | + | 1 2 | ) | + | 1 | ÷ | ( | 5 | + | x | ) | × | x | ( | x | + | 1 2 | ) | = | 1 | x |
| 2 | x | + | 1 | + | 1 | ÷ | ( | 2 | + | x | ) | × | x | ( | x | + | 1 2 | ) | + | 1 | ÷ | ( | 5 | + | x | ) | × | x | ( | x | + | 1 2 | ) | = | 1 | x |
| 方程两边同时乘以: | ( | 2 | + | x | ) |
| 2 | x | ( | 2 | + | x | ) | + | 1 | ( | 2 | + | x | ) | + | 1 | x | ( | x | + | 1 2 | ) | + | 1 | ÷ | ( | 5 | + | x | ) | × | x | ( | x | + | 1 2 | ) | = | 1 | x | ( | 2 | + | x | ) |
| 2 | x | × | 2 | + | 2 | x | x | + | 1 | ( | 2 | + | x | ) | + | 1 | x | ( | x | + | 1 2 | ) | + | 1 | = | 1 | x | ( | 2 | + | x | ) |
| 2 | x | × | 2 | + | 2 | x | x | + | 1 | ( | 2 | + | x | ) | + | 1 | x | ( | x | + | 1 2 | ) | + | 1 | = | 1 | x | × | 2 | + | 1 | x | x |
| 4 | x | + | 2 | x | x | + | 1 | ( | 2 | + | x | ) | + | 1 | x | ( | x | + | 1 2 | ) | + | 1 | ÷ | ( | 5 | + | x | ) | = | 2 | x | + | 1 | x | x |
| 方程两边同时乘以: | ( | 5 | + | x | ) |
| 4 | x | ( | 5 | + | x | ) | + | 2 | x | x | ( | 5 | + | x | ) | + | 1 | ( | 2 | + | x | ) | ( | 5 | + | x | ) | + | 1 | x | = | 2 | x | ( | 5 | + | x | ) | + | 1 | x | x | ( | 5 | + | x | ) |
| 4 | x | × | 5 | + | 4 | x | x | + | 2 | x | x | ( | 5 | + | x | ) | + | 1 | ( | 2 | + | x | ) | = | 2 | x | ( | 5 | + | x | ) | + | 1 | x | x | ( | 5 | + | x | ) |
| 4 | x | × | 5 | + | 4 | x | x | + | 2 | x | x | ( | 5 | + | x | ) | + | 1 | ( | 2 | + | x | ) | = | 2 | x | × | 5 | + | 2 | x | x | + | 1 | x | x | ( | 5 | + | x | ) |
| 20 | x | + | 4 | x | x | + | 2 | x | x | ( | 5 | + | x | ) | + | 1 | ( | 2 | + | x | ) | ( | 5 | + | x | ) | = | 10 | x | + | 2 | x | x | + | 1 | x | x | ( | 5 | + | x | ) |
| 20 | x | + | 4 | x | x | + | 2 | x | x | × | 5 | + | 2 | x | x | = | 10 | x | + | 2 | x | x | + | 1 | x | x | ( | 5 | + | x | ) |
| 20 | x | + | 4 | x | x | + | 2 | x | x | × | 5 | + | 2 | x | x | = | 10 | x | + | 2 | x | x | + | 1 | x | x | × | 5 | + | 1 | x | x |
| 20 | x | + | 4 | x | x | + | 10 | x | x | + | 2 | x | x | x | = | 10 | x | + | 2 | x | x | + | 5 | x | x | + | 1 | x | x | x |
| 20 | x | + | 4 | x | x | + | 10 | x | x | + | 2 | x | x | x | = | 10 | x | + | 2 | x | x | + | 5 | x | x | + | 1 | x | x | x |
| 20 | x | + | 4 | x | x | + | 10 | x | x | + | 2 | x | x | x | = | 10 | x | + | 2 | x | x | + | 5 | x | x | + | 1 | x | x | x |
| 20 | x | + | 4 | x | x | + | 10 | x | x | + | 2 | x | x | x | = | 10 | x | + | 2 | x | x | + | 5 | x | x | + | 1 | x | x | x |
| 20 | x | + | 4 | x | x | + | 10 | x | x | + | 2 | x | x | x | = | 10 | x | + | 2 | x | x | + | 5 | x | x | + | 1 | x | x | x |
| 22 | x | + | 4 | x | x | + | 10 | x | x | + | 2 | x | x | x | = | 10 | x | + | 2 | x | x | + | 5 | x | x | + | 1 | x | x | x |
| 22 | x | + | 4 | x | x | + | 10 | x | x | + | 2 | x | x | x | = | 10 | x | + | 2 | x | x | + | 5 | x | x | + | 1 | x | x | x |
| 22 | x | + | 4 | x | x | + | 10 | x | x | + | 2 | x | x | x | = | 10 | x | + | 2 | x | x | + | 5 | x | x | + | 1 | x | x | x |
| 27 | x | + | 4 | x | x | + | 10 | x | x | + | 2 | x | x | x | = | 10 | x | + | 2 | x | x | + | 5 | x | x | + | 1 | x | x | x |