| ( | x | − | 6 | ) | × | 5 | ÷ | 6 | = | ( | x | − | 5 | ) | × | 4 | ÷ | 5 |
| 方程左边 = | ( | x | − | 6 | ) | × | 5 6 |
| ( | x | − | 6 | ) | × | 5 6 | = | ( | x | − | 5 | ) | × | 4 | ÷ | 5 |
| 方程左边 = | x | × | 5 6 | − | 6 | × | 5 6 |
| = | x | × | 5 6 | − | 5 |
5 6 | x | − | 5 | = | ( | x | − | 5 | ) | × | 4 | ÷ | 5 |
| 方程右边 = | ( | x | − | 5 | ) | × | 4 5 |
5 6 | x | − | 5 | = | ( | x | − | 5 | ) | × | 4 5 |
| 方程右边 = | x | × | 4 5 | − | 5 | × | 4 5 |
| = | x | × | 4 5 | − | 4 |
5 6 | x | − | 5 | = | 4 5 | x | − | 4 |
5 6 | x | − | 4 5 | x | = | - | 4 | + | 5 |
1 30 | x | = | - | 4 | + | 5 |
1 30 | x | = | 1 |
| x | = | 1 | ÷ | 1 30 |
| = | 1 | × | 30 |
| x | = | 30 |