| 2 | ÷ | s | + | 1 | ÷ | ( | s | + | 6 | ) | = | 1 | ÷ | ( | s | + | 4 | ) |
| 方程两边同时乘以: | s | , | ( | s | + | 4 | ) |
| 2 | ( | s | + | 4 | ) | + | 1 | ÷ | ( | s | + | 6 | ) | × | s | ( | s | + | 4 | ) | = | 1 | s |
| 2 | s | + | 2 | × | 4 | + | 1 | ÷ | ( | s | + | 6 | ) | × | s | ( | s | + | 4 | ) | = | 1 | s |
| 2 | s | + | 8 | + | 1 | ÷ | ( | s | + | 6 | ) | × | s | ( | s | + | 4 | ) | = | 1 | s |
| 方程两边同时乘以: | ( | s | + | 6 | ) |
| 2 | s | ( | s | + | 6 | ) | + | 8 | ( | s | + | 6 | ) | + | 1 | s | ( | s | + | 4 | ) | = | 1 | s | ( | s | + | 6 | ) |
| 2 | s | s | + | 2 | s | × | 6 | + | 8 | ( | s | + | 6 | ) | + | 1 | s | ( | s | + | 4 | ) | = | 1 | s | ( | s | + | 6 | ) |
| 2 | s | s | + | 2 | s | × | 6 | + | 8 | ( | s | + | 6 | ) | + | 1 | s | ( | s | + | 4 | ) | = | 1 | s | s | + | 1 | s | × | 6 |
| 2 | s | s | + | 12 | s | + | 8 | ( | s | + | 6 | ) | + | 1 | s | ( | s | + | 4 | ) | = | 1 | s | s | + | 6 | s |
| 2 | s | s | + | 12 | s | + | 8 | s | + | 8 | × | 6 | + | 1 | s | ( | s | + | 4 | ) | = | 1 | s | s | + | 6 | s |
| 2 | s | s | + | 12 | s | + | 8 | s | + | 48 | + | 1 | s | ( | s | + | 4 | ) | = | 1 | s | s | + | 6 | s |
| 2 | s | s | + | 20 | s | + | 48 | + | 1 | s | ( | s | + | 4 | ) | = | 1 | s | s | + | 6 | s |
| 2 | s | s | + | 20 | s | + | 48 | + | 1 | s | s | + | 1 | s | × | 4 | = | 1 | s | s | + | 6 | s |
| 2 | s | s | + | 20 | s | + | 48 | + | 1 | s | s | + | 4 | s | = | 1 | s | s | + | 6 | s |
| 2 | s | s | + | 24 | s | + | 48 | + | 1 | s | s | = | 1 | s | s | + | 6 | s |