| ( | 5 | ÷ | 12 | ) | x | − | 1 | ÷ | 3 | = | - | ( | 1 | ÷ | 4 | ) |
| 方程左边 = | ( | 5 | ÷ | 12 | ) | x | − | 1 3 |
| ( | 5 | ÷ | 12 | ) | x | − | 1 3 | = | - | ( | 1 | ÷ | 4 | ) |
| 方程左边 = | 5 | ÷ | 12 | × | x | − | 1 3 |
| = | 5 12 | x | − | 1 3 |
5 12 | x | − | 1 3 | = | - | ( | 1 | ÷ | 4 | ) |
| 方程右边 = | - | 1 | ÷ | 4 |
| = | - | 1 4 |
5 12 | x | − | 1 3 | = | - | 1 4 |
5 12 | x | = | - | 1 4 | + | 1 3 |
5 12 | x | = | 1 12 |
| x | = | 1 12 | ÷ | 5 12 |
| = | 1 12 | × | 12 5 |
| = | 1 | × | 1 5 |
| x | = | 1 5 |
| x | = | 0.2 |