| - | 7 | x | ÷ | 5 | − | 3 | = | 5 | ( | x | − | 7 | ) |
| 方程左边 = | - | 7 5 | x | − | 3 |
| - | 7 5 | x | − | 3 | = | 5 | ( | x | − | 7 | ) |
| 方程右边 = | 5 | x | − | 5 | × | 7 |
| = | 5 | x | − | 35 |
| - | 7 5 | x | − | 3 | = | 5 | x | − | 35 |
| - | 7 5 | x | − | 5 | x | = | - | 35 | + | 3 |
| - | 32 5 | x | = | - | 35 | + | 3 |
| - | 32 5 | x | = | - | 32 |
| 32 | = | 32 5 | x |
32 5 | x | = | 32 |
| x | = | 32 | ÷ | 32 5 |
| = | 32 | × | 5 32 |
| = | 1 | × | 5 |
| x | = | 5 |