6 5 | x | = | ( | 6 5 | + | 1 5 | ) | ( | x | − | 5 | ) |
| 方程右边 = | 6 5 | ( | x | − | 5 | ) | + | 1 5 | ( | x | − | 5 | ) |
| = | 6 5 | x | − | 6 5 | × | 5 | + | 1 5 | ( | x | − | 5 | ) |
| = | 6 5 | x | − | 6 | + | 1 5 | ( | x | − | 5 | ) |
| = | 6 5 | x | − | 6 | + | 1 5 | x | − | 1 5 | × | 5 |
| = | 6 5 | x | − | 6 | + | 1 5 | x | − | 1 |
| = | 7 5 | x | − | 7 |
6 5 | x | = | 7 5 | x | − | 7 |
6 5 | x | − | 7 5 | x | = | - | 7 |
| - | 1 5 | x | = | - | 7 |
| 7 | = | 1 5 | x |
1 5 | x | = | 7 |
| x | = | 7 | ÷ | 1 5 |
| = | 7 | × | 5 |
| x | = | 35 |