| 4 | ÷ | ( | 2 | a | + | 6 | ) | + | 4 | ÷ | a | = | 3 | ÷ | ( | a | + | 6 | ) | + | 3 2 | ÷ | a |
| 方程两边同时乘以: | ( | 2 | a | + | 6 | ) | , | ( | a | + | 6 | ) |
| 4 | ( | a | + | 6 | ) | + | 4 | ÷ | a | × | ( | 2 | a | + | 6 | ) | ( | a | + | 6 | ) | = | 3 | ( | 2 | a | + | 6 | ) | + | 3 2 | ÷ | a | × | ( | 2 | a | + | 6 | ) | ( | a | + | 6 | ) |
| 4 | a | + | 4 | × | 6 | + | 4 | ÷ | a | × | ( | 2 | a | + | 6 | ) | ( | a | + | 6 | ) | = | 3 | ( | 2 | a | + | 6 | ) | + | 3 2 | ÷ | a | × | ( | 2 | a | + | 6 | ) | ( | a | + | 6 | ) |
| 4 | a | + | 4 | × | 6 | + | 4 | ÷ | a | × | ( | 2 | a | + | 6 | ) | ( | a | + | 6 | ) | = | 3 | × | 2 | a | + | 3 | × | 6 | + | 3 2 | ÷ | a | × | ( | 2 | a | + | 6 | ) | ( | a | + | 6 | ) |
| 4 | a | + | 24 | + | 4 | ÷ | a | × | ( | 2 | a | + | 6 | ) | ( | a | + | 6 | ) | = | 6 | a | + | 18 | + | 3 2 | ÷ | a | × | ( | 2 | a | + | 6 | ) | ( | a | + | 6 | ) |
| 方程两边同时乘以: | a |
| 4 | a | a | + | 24 | a | + | 4 | ( | 2 | a | + | 6 | ) | ( | a | + | 6 | ) | = | 6 | a | a | + | 18 | a | + | 3 2 | ÷ | 1 | × | ( | 2 | a | + | 6 | ) | ( | a | + | 6 | ) | × | 1 |
| 4 | a | a | + | 24 | a | + | 4 | × | 2 | a | ( | a | + | 6 | ) | + | 4 | × | 6 | ( | a | + | 6 | ) | = | 6 | a | a | + | 18 | a | + | 3 2 | ÷ | 1 | × | ( | 2 | a | + | 6 | ) | ( | a | + | 6 | ) | × | 1 |
| 4 | a | a | + | 24 | a | + | 4 | × | 2 | a | ( | a | + | 6 | ) | + | 4 | × | 6 | ( | a | + | 6 | ) | = | 6 | a | a | + | 18 | a | + | 3 2 | ÷ | 1 | × | 2 | a | ( | a | + | 6 | ) | × | 1 | + | 3 2 |
| 4 | a | a | + | 24 | a | + | 8 | a | ( | a | + | 6 | ) | + | 24 | ( | a | + | 6 | ) | = | 6 | a | a | + | 18 | a | + | 3 | a | ( | a | + | 6 | ) | + | 9 | ( | a | + | 6 | ) |
| 4 | a | a | + | 24 | a | + | 8 | a | a | + | 8 | a | × | 6 | + | 24 | = | 6 | a | a | + | 18 | a | + | 3 | a | ( | a | + | 6 | ) | + | 9 | ( | a | + | 6 | ) |
| 4 | a | a | + | 24 | a | + | 8 | a | a | + | 8 | a | × | 6 | + | 24 | = | 6 | a | a | + | 18 | a | + | 3 | a | a | + | 3 | a | × | 6 | + | 9 |
| 4 | a | a | + | 24 | a | + | 8 | a | a | + | 48 | a | + | 24 | ( | a | + | 6 | ) | = | 6 | a | a | + | 18 | a | + | 3 | a | a | + | 18 | a | + | 9 | ( | a | + | 6 | ) |
| 4 | a | a | + | 72 | a | + | 8 | a | a | + | 24 | ( | a | + | 6 | ) | = | 6 | a | a | + | 36 | a | + | 3 | a | a | + | 9 | ( | a | + | 6 | ) |
| 4 | a | a | + | 72 | a | + | 8 | a | a | + | 24 | a | + | 24 | × | 6 | = | 6 | a | a | + | 36 | a | + | 3 | a | a | + | 9 | ( | a | + | 6 | ) |
| 4 | a | a | + | 72 | a | + | 8 | a | a | + | 24 | a | + | 24 | × | 6 | = | 6 | a | a | + | 36 | a | + | 3 | a | a | + | 9 | a | + | 9 | × | 6 |
| 4 | a | a | + | 72 | a | + | 8 | a | a | + | 24 | a | + | 144 | = | 6 | a | a | + | 36 | a | + | 3 | a | a | + | 9 | a | + | 54 |
| 4 | a | a | + | 96 | a | + | 8 | a | a | + | 144 | = | 6 | a | a | + | 45 | a | + | 3 | a | a | + | 54 |