| ( | x | − | 8 | ) | ÷ | ( | x | − | 7 | ) | + | 1 | ÷ | ( | x | − | 7 | ) | = | 2 |
| 方程两边同时乘以: | ( | x | − | 7 | ) |
| ( | x | − | 8 | ) | + | 1 | = | 2 | ( | x | − | 7 | ) |
| x | − | 8 | + | 1 | = | 2 | ( | x | − | 7 | ) |
| x | − | 8 | + | 1 | = | 2 | x | − | 2 | × | 7 |
| x | − | 8 | + | 1 | = | 2 | x | − | 14 |
| x | − | 7 | = | 2 | x | − | 14 |
| x | − | 2 | x | = | - | 14 | + | 7 |
| - | x | = | - | 14 | + | 7 |
| - | x | = | - | 14 | + | 7 |
| - | x | = | - | 7 |
| 7 | = | x |
| x | = | 7 |
| x | = | 7 |