| 100 | − | ( | 50 | ÷ | ( | x | + | 5 4 | ) | + | 50 | ÷ | ( | 1 | + | x | ) | + | 50 | ÷ | ( | 1 | + | x | ) | ) | = | 0 |
| 100 | − | 50 | ÷ | ( | x | + | 5 4 | ) | − | 50 | ÷ | ( | 1 | + | x | ) | − | 50 | ÷ | ( | 1 | + | x | ) | = | 0 |
| 方程两边同时乘以: | ( | x | + | 5 4 | ) |
| 100 | ( | x | + | 5 4 | ) | − | 50 | − | 50 | ÷ | ( | 1 | + | x | ) | × | ( | x | + | 5 4 | ) | − | 50 | ÷ | ( | 1 | + | x | ) | × | ( | x | + | 5 4 | ) | = | 0 |
| 100 | x | + | 100 | × | 5 4 | − | 50 | − | 50 | ÷ | ( | 1 | + | x | ) | × | ( | x | + | 5 4 | ) | − | 50 | ÷ | ( | 1 | + | x | ) | × | ( | x | + | 5 4 | ) | = | 0 |
| 100 | x | + | 125 | − | 50 | − | 50 | ÷ | ( | 1 | + | x | ) | × | ( | x | + | 5 4 | ) | − | 50 | ÷ | ( | 1 | + | x | ) | × | ( | x | + | 5 4 | ) | = | 0 |
| 100 | x | + | 75 | − | 50 | ÷ | ( | 1 | + | x | ) | × | ( | x | + | 5 4 | ) | − | 50 | ÷ | ( | 1 | + | x | ) | × | ( | x | + | 5 4 | ) | = | 0 |
| 方程两边同时乘以: | ( | 1 | + | x | ) |
| 100 | x | ( | 1 | + | x | ) | + | 75 | ( | 1 | + | x | ) | − | 50 | ( | x | + | 5 4 | ) | − | 50 | ( | x | + | 5 4 | ) | = | 0 |
| 100 | x | × | 1 | + | 100 | x | x | + | 75 | ( | 1 | + | x | ) | − | 50 | ( | x | + | 5 4 | ) | − | 50 | ( | x | + | 5 4 | ) | = | 0 |
| 100 | x | + | 100 | x | x | + | 75 | ( | 1 | + | x | ) | − | 50 | ( | x | + | 5 4 | ) | − | 50 | ( | x | + | 5 4 | ) | = | 0 |
| 100 | x | + | 100 | x | x | + | 75 | × | 1 | + | 75 | x | − | 50 | ( | x | + | 5 4 | ) | − | 50 | = | 0 |
| 100 | x | + | 100 | x | x | + | 75 | + | 75 | x | − | 50 | ( | x | + | 5 4 | ) | − | 50 | ( | x | + | 5 4 | ) | = | 0 |
| 175 | x | + | 100 | x | x | + | 75 | − | 50 | ( | x | + | 5 4 | ) | − | 50 | ( | x | + | 5 4 | ) | = | 0 |
| 175 | x | + | 100 | x | x | + | 75 | − | 50 | x | − | 50 | × | 5 4 | − | 50 | ( | x | + | 5 4 | ) | = | 0 |
| 175 | x | + | 100 | x | x | + | 75 | − | 50 | x | − | 125 2 | − | 50 | ( | x | + | 5 4 | ) | = | 0 |
| 125 | x | + | 100 | x | x | + | 25 2 | − | 50 | ( | x | + | 5 4 | ) | = | 0 |
| 125 | x | + | 100 | x | x | + | 25 2 | − | 50 | x | − | 50 | × | 5 4 | = | 0 |
| 125 | x | + | 100 | x | x | + | 25 2 | − | 50 | x | − | 125 2 | = | 0 |
| 75 | x | + | 100 | x | x | − | 50 | = | 0 |