| 112 | ÷ | x | + | 2 | = | 112 | ÷ | ( | x | − | 1 | ) |
| 方程两边同时乘以: | x | , | ( | x | − | 1 | ) |
| 112 | ( | x | − | 1 | ) | + | 2 | x | ( | x | − | 1 | ) | = | 112 | x |
| 112 | x | − | 112 | × | 1 | + | 2 | x | ( | x | − | 1 | ) | = | 112 | x |
| 112 | x | − | 112 | + | 2 | x | ( | x | − | 1 | ) | = | 112 | x |
| 112 | x | − | 112 | + | 2 | x | x | − | 2 | x | × | 1 | = | 112 | x |
| 112 | x | − | 112 | + | 2 | x | x | − | 2 | x | = | 112 | x |
| 110 | x | − | 112 | + | 2 | x | x | = | 112 | x |