| 1 | = | 1 | ÷ | s | + | 1 | ÷ | ( | s | + | 1 | ) | + | 1 | ÷ | ( | 2 | + | s | ) |
| 方程两边同时乘以: | s |
| 1 | s | = | 1 | + | 1 | ÷ | ( | s | + | 1 | ) | × | s | + | 1 | ÷ | ( | 2 | + | s | ) | × | s |
| 方程两边同时乘以: | ( | s | + | 1 | ) |
| 1 | s | ( | s | + | 1 | ) | = | 1 | ( | s | + | 1 | ) | + | 1 | s | + | 1 | ÷ | ( | 2 | + | s | ) | × | s | ( | s | + | 1 | ) |
| 1 | s | s | + | 1 | s | × | 1 | = | 1 | ( | s | + | 1 | ) | + | 1 | s | + | 1 | ÷ | ( | 2 | + | s | ) | × | s | ( | s | + | 1 | ) |
| 1 | s | s | + | 1 | s | × | 1 | = | 1 | s | + | 1 | × | 1 | + | 1 | s | + | 1 | ÷ | ( | 2 | + | s | ) | × | s | ( | s | + | 1 | ) |
| 1 | s | s | + | 1 | s | = | 1 | s | + | 1 | + | 1 | s | + | 1 | ÷ | ( | 2 | + | s | ) | × | s | ( | s | + | 1 | ) |
| 1 | s | s | + | 1 | s | = | 2 | s | + | 1 | + | 1 | ÷ | ( | 2 | + | s | ) | × | s | ( | s | + | 1 | ) |
| 方程两边同时乘以: | ( | 2 | + | s | ) |
| 1 | s | s | ( | 2 | + | s | ) | + | 1 | s | ( | 2 | + | s | ) | = | 2 | s | ( | 2 | + | s | ) | + | 1 | ( | 2 | + | s | ) | + | 1 | s | ( | s | + | 1 | ) |
| 1 | s | s | × | 2 | + | 1 | s | s | s | + | 1 | s | ( | 2 | + | s | ) | = | 2 | s | ( | 2 | + | s | ) | + | 1 | ( | 2 | + | s | ) | + | 1 | s | ( | s | + | 1 | ) |
| 1 | s | s | × | 2 | + | 1 | s | s | s | + | 1 | s | ( | 2 | + | s | ) | = | 2 | s | × | 2 | + | 2 | s | s | + | 1 | ( | 2 | + | s | ) | + | 1 | s | ( | s | + | 1 | ) |
| 2 | s | s | + | 1 | s | s | s | + | 1 | s | ( | 2 | + | s | ) | = | 4 | s | + | 2 | s | s | + | 1 | ( | 2 | + | s | ) | + | 1 | s | ( | s | + | 1 | ) |
| 2 | s | s | + | 1 | s | s | s | + | 1 | s | × | 2 | + | 1 | s | = | 4 | s | + | 2 | s | s | + | 1 | ( | 2 | + | s | ) | + | 1 | s | ( | s | + | 1 | ) |
| 2 | s | s | + | 1 | s | s | s | + | 1 | s | × | 2 | + | 1 | s | = | 4 | s | + | 2 | s | s | + | 1 | × | 2 | + | 1 | s | + | 1 | s | ( | s | + | 1 | ) |
| 2 | s | s | + | 1 | s | s | s | + | 2 | s | + | 1 | s | s | = | 4 | s | + | 2 | s | s | + | 2 | + | 1 | s | + | 1 | s | ( | s | + | 1 | ) |
| 2 | s | s | + | 1 | s | s | s | + | 2 | s | + | 1 | s | s | = | 5 | s | + | 2 | s | s | + | 2 | + | 1 | s | ( | s | + | 1 | ) |
| 2 | s | s | + | 1 | s | s | s | + | 2 | s | + | 1 | s | s | = | 5 | s | + | 2 | s | s | + | 2 | + | 1 | s | s | + | 1 | s | × | 1 |
| 2 | s | s | + | 1 | s | s | s | + | 2 | s | + | 1 | s | s | = | 5 | s | + | 2 | s | s | + | 2 | + | 1 | s | s | + | 1 | s |
| 2 | s | s | + | 1 | s | s | s | + | 2 | s | + | 1 | s | s | = | 6 | s | + | 2 | s | s | + | 2 | + | 1 | s | s |