| x | + | 1 | ÷ | ( | 1 | − | x | ) | + | x | ÷ | x | − | 1 | = | 19 | ÷ | 6 |
| 方程两边同时乘以: | ( | 1 | − | x | ) |
| x | ( | 1 | − | x | ) | + | 1 | + | 1 | ÷ | 1 | × | ( | 1 | − | x | ) | − | 1 | ( | 1 | − | x | ) | = | 19 | ÷ | 6 | × | ( | 1 | − | x | ) |
| x | × | 1 | − | x | x | + | 1 | + | 1 | ÷ | 1 | × | ( | 1 | − | x | ) | − | 1 | ( | 1 | − | x | ) | = | 19 | ÷ | 6 | × | ( | 1 | − | x | ) |
| x | × | 1 | − | x | x | + | 1 | + | 1 | ÷ | 1 | × | ( | 1 | − | x | ) | − | 1 | ( | 1 | − | x | ) | = | 19 | ÷ | 6 | × | 1 | − | 19 | ÷ | 6 | × | x |
| x | × | 1 | − | x | x | + | 1 | + | 1 | ( | 1 | − | x | ) | − | 1 | ( | 1 | − | x | ) | = | 19 6 | − | 19 6 | x |
| 1 | x | − | x | x | + | 1 | + | 1 | × | 1 | − | 1 | x | − | 1 | ( | 1 | − | x | ) | = | 19 6 | − | 19 6 | x |
| 1 | x | − | x | x | + | 1 | + | 1 | − | 1 | x | − | 1 | ( | 1 | − | x | ) | = | 19 6 | − | 19 6 | x |
| 0 | x | − | x | x | + | 2 | − | 1 | ( | 1 | − | x | ) | = | 19 6 | − | 19 6 | x |
| - | x | x | + | 2 | − | 1 | × | 1 | + | 1 | x | = | 19 6 | − | 19 6 | x |
| - | x | x | + | 2 | − | 1 | + | 1 | x | = | 19 6 | − | 19 6 | x |
| - | x | x | + | 1 | + | 1 | x | = | 19 6 | − | 19 6 | x |