| 20 | + | ( | 1 | − | 20 | ( | 1 | ÷ | ( | x | + | 32 | ) | + | 1 | ÷ | ( | x | + | 12 | ) | ) | ) | ÷ | ( | x | + | 32 | ) | − | x | = | 2 |
| 方程两边同时乘以: | ( | x | + | 32 | ) |
| 20 | ( | x | + | 32 | ) | + | ( | 1 | − | 20 | ( | 1 | ÷ | ( | x | + | 32 | ) | + | 1 | ÷ | ( | x | + | 12 | ) | ) | ) | − | x | ( | x | + | 32 | ) | = | 2 | ( | x | + | 32 | ) |
| 20 | x | + | 20 | × | 32 | + | ( | 1 | − | 20 | ( | 1 | ÷ | ( | x | + | 32 | ) | + | 1 | ÷ | ( | x | + | 12 | ) | ) | ) | − | x | ( | x | + | 32 | ) | = | 2 | ( | x | + | 32 | ) |
| 20 | x | + | 20 | × | 32 | + | ( | 1 | − | 20 | ( | 1 | ÷ | ( | x | + | 32 | ) | + | 1 | ÷ | ( | x | + | 12 | ) | ) | ) | − | x | ( | x | + | 32 | ) | = | 2 | x | + | 2 | × | 32 |
| 20 | x | + | 640 | + | ( | 1 | − | 20 | ( | 1 | ÷ | ( | x | + | 32 | ) | + | 1 | ÷ | ( | x | + | 12 | ) | ) | ) | − | x | ( | x | + | 32 | ) | = | 2 | x | + | 64 |
| 20 | x | + | 640 | + | 1 | − | 20 | ( | 1 | ÷ | ( | x | + | 32 | ) | + | 1 | ÷ | ( | x | + | 12 | ) | ) | − | x | ( | x | + | 32 | ) | = | 2 | x | + | 64 |
| 20 | x | + | 641 | − | 20 | ( | 1 | ÷ | ( | x | + | 32 | ) | + | 1 | ÷ | ( | x | + | 12 | ) | ) | − | x | ( | x | + | 32 | ) | = | 2 | x | + | 64 |
| 20 | x | + | 641 | − | 20 | × | 1 | ÷ | ( | x | + | 32 | ) | − | 20 | × | 1 | ÷ | ( | x | + | 12 | ) | − | x | ( | x | + | 32 | ) | = | 2 | x | + | 64 |
| 20 | x | + | 641 | − | 20 | ÷ | ( | x | + | 32 | ) | − | 20 | ÷ | ( | x | + | 12 | ) | − | x | ( | x | + | 32 | ) | = | 2 | x | + | 64 |
| 方程两边同时乘以: | ( | x | + | 32 | ) |
| 20 | x | ( | x | + | 32 | ) | + | 641 | ( | x | + | 32 | ) | − | 20 | − | 20 | ÷ | ( | x | + | 12 | ) | × | ( | x | + | 32 | ) | − | x | ( | x | + | 32 | ) | ( | x | + | 32 | ) | = | 2 | x | ( | x | + | 32 | ) | + | 64 | ( | x | + | 32 | ) |
| 20 | x | x | + | 20 | x | × | 32 | + | 641 | ( | x | + | 32 | ) | − | 20 | − | 20 | ÷ | ( | x | + | 12 | ) | × | ( | x | + | 32 | ) | = | 2 | x | ( | x | + | 32 | ) | + | 64 | ( | x | + | 32 | ) |
| 20 | x | x | + | 20 | x | × | 32 | + | 641 | ( | x | + | 32 | ) | − | 20 | − | 20 | ÷ | ( | x | + | 12 | ) | × | ( | x | + | 32 | ) | = | 2 | x | x | + | 2 | x | × | 32 | + | 64 | ( | x | + | 32 | ) |
| 20 | x | x | + | 640 | x | + | 641 | ( | x | + | 32 | ) | − | 20 | − | 20 | ÷ | ( | x | + | 12 | ) | × | ( | x | + | 32 | ) | − | x | = | 2 | x | x | + | 64 | x | + | 64 | ( | x | + | 32 | ) |
| 方程两边同时乘以: | ( | x | + | 12 | ) |
| 20 | x | x | ( | x | + | 12 | ) | + | 640 | x | ( | x | + | 12 | ) | + | 641 | ( | x | + | 32 | ) | ( | x | + | 12 | ) | − | 20 | ( | x | + | 12 | ) | = | 2 | x | x | ( | x | + | 12 | ) | + | 64 | x | ( | x | + | 12 | ) | + | 64 | ( | x | + | 32 | ) | ( | x | + | 12 | ) |
| 20 | x | x | x | + | 20 | x | x | × | 12 | + | 640 | x | ( | x | + | 12 | ) | + | 641 | = | 2 | x | x | ( | x | + | 12 | ) | + | 64 | x | ( | x | + | 12 | ) | + | 64 | ( | x | + | 32 | ) | ( | x | + | 12 | ) |
| 20 | x | x | x | + | 20 | x | x | × | 12 | + | 640 | x | ( | x | + | 12 | ) | + | 641 | = | 2 | x | x | x | + | 2 | x | x | × | 12 | + | 64 | x | ( | x | + | 12 | ) | + | 64 |
| 20 | x | x | x | + | 240 | x | x | + | 640 | x | ( | x | + | 12 | ) | + | 641 | ( | x | + | 32 | ) | = | 2 | x | x | x | + | 24 | x | x | + | 64 | x | ( | x | + | 12 | ) | + | 64 | ( | x | + | 32 | ) |
| 20 | x | x | x | + | 240 | x | x | + | 640 | x | x | + | 640 | x | = | 2 | x | x | x | + | 24 | x | x | + | 64 | x | ( | x | + | 12 | ) | + | 64 | ( | x | + | 32 | ) |
| 20 | x | x | x | + | 240 | x | x | + | 640 | x | x | + | 640 | x | = | 2 | x | x | x | + | 24 | x | x | + | 64 | x | x | + | 64 | x |
| 20 | x | x | x | + | 240 | x | x | + | 640 | x | x | + | 7680 | x | = | 2 | x | x | x | + | 24 | x | x | + | 64 | x | x | + | 768 | x |
| 20 | x | x | x | + | 240 | x | x | + | 640 | x | x | + | 7680 | x | = | 2 | x | x | x | + | 24 | x | x | + | 64 | x | x | + | 768 | x |
| 20 | x | x | x | + | 240 | x | x | + | 640 | x | x | + | 7680 | x | = | 2 | x | x | x | + | 24 | x | x | + | 64 | x | x | + | 768 | x |
| 20 | x | x | x | + | 240 | x | x | + | 640 | x | x | + | 7680 | x | = | 2 | x | x | x | + | 24 | x | x | + | 64 | x | x | + | 768 | x |
| 20 | x | x | x | + | 240 | x | x | + | 640 | x | x | + | 7680 | x | = | 2 | x | x | x | + | 24 | x | x | + | 64 | x | x | + | 768 | x |