| ( | 1 | − | 4 | ÷ | 7 | ) | x | = | ( | 1 | − | 2 | ÷ | 5 | ) | ( | x | − | 60 | ) |
| 方程左边 = | 1 | x | − | 4 | ÷ | 7 | × | x |
| = | 1 | x | − | 4 7 | x |
| = | 3 7 | x |
3 7 | x | = | ( | 1 | − | 2 | ÷ | 5 | ) | ( | x | − | 60 | ) |
| 方程右边 = | 1 | ( | x | − | 60 | ) | − | 2 | ÷ | 5 | × | ( | x | − | 60 | ) |
| = | 1 | ( | x | − | 60 | ) | − | 2 5 | ( | x | − | 60 | ) |
| = | 1 | x | − | 1 | × | 60 | − | 2 5 | ( | x | − | 60 | ) |
| = | 1 | x | − | 60 | − | 2 5 | ( | x | − | 60 | ) |
| = | 1 | x | − | 60 | − | 2 5 | x | + | 2 5 | × | 60 |
| = | 1 | x | − | 60 | − | 2 5 | x | + | 24 |
| = | 3 5 | x | − | 36 |
3 7 | x | = | 3 5 | x | − | 36 |
3 7 | x | − | 3 5 | x | = | - | 36 |
| - | 6 35 | x | = | - | 36 |
| 36 | = | 6 35 | x |
6 35 | x | = | 36 |
| x | = | 36 | ÷ | 6 35 |
| = | 36 | × | 35 6 |
| = | 6 | × | 35 |
| x | = | 210 |