| - | 85 | + | 48 | ÷ | ( | 1 | + | x | ) | + | 43 | ÷ | ( | 1 | + | x | ) | × | ( | 1 | + | x | ) | + | 32 | ÷ | ( | 1 | + | x | ) | × | ( | 1 | + | x | ) | ( | 1 | + | x | ) | = | 0 |
| 方程两边同时乘以: | ( | 1 | + | x | ) |
| - | 85 | ( | 1 | + | x | ) | + | 48 | + | 43 | ( | 1 | + | x | ) | + | 32 | ( | 1 | + | x | ) | ( | 1 | + | x | ) | = | 0 |
| - | 85 | × | 1 | − | 85 | x | + | 48 | + | 43 | ( | 1 | + | x | ) | + | 32 | ( | 1 | + | x | ) | ( | 1 | + | x | ) | = | 0 |
| - | 85 | − | 85 | x | + | 48 | + | 43 | ( | 1 | + | x | ) | + | 32 | ( | 1 | + | x | ) | ( | 1 | + | x | ) | = | 0 |
| - | 37 | − | 85 | x | + | 43 | ( | 1 | + | x | ) | + | 32 | ( | 1 | + | x | ) | ( | 1 | + | x | ) | = | 0 |
| - | 37 | − | 85 | x | + | 43 | × | 1 | + | 43 | x | + | 32 | ( | 1 | + | x | ) | ( | 1 | + | x | ) | = | 0 |
| - | 37 | − | 85 | x | + | 43 | + | 43 | x | + | 32 | ( | 1 | + | x | ) | ( | 1 | + | x | ) | = | 0 |
| 6 | − | 42 | x | + | 32 | ( | 1 | + | x | ) | ( | 1 | + | x | ) | = | 0 |
| 6 | − | 42 | x | + | 32 | × | 1 | ( | 1 | + | x | ) | + | 32 | x | ( | 1 | + | x | ) | = | 0 |
| 6 | − | 42 | x | + | 32 | ( | 1 | + | x | ) | + | 32 | x | ( | 1 | + | x | ) | = | 0 |
| 6 | − | 42 | x | + | 32 | × | 1 | + | 32 | x | + | 32 | x | ( | 1 | + | x | ) | = | 0 |
| 6 | − | 42 | x | + | 32 | + | 32 | x | + | 32 | x | ( | 1 | + | x | ) | = | 0 |
| 38 | − | 10 | x | + | 32 | x | ( | 1 | + | x | ) | = | 0 |
| 38 | − | 10 | x | + | 32 | x | × | 1 | + | 32 | x | x | = | 0 |
| 38 | − | 10 | x | + | 32 | x | + | 32 | x | x | = | 0 |
| 38 | + | 22 | x | + | 32 | x | x | = | 0 |