| ( | ( | 12 | ÷ | 5 | ) | − | x | ) | ÷ | ( | 12 | ÷ | 5 | ) | = | 2 | x | ÷ | 5 |
| 方程两边同时乘以: | ( | 12 | ÷ | 5 | ) |
| ( | ( | 12 | ÷ | 5 | ) | − | x | ) | = | 2 | x | ÷ | 5 | × | ( | 12 | ÷ | 5 | ) |
| ( | 12 | ÷ | 5 | ) | − | x | = | 2 | x | ÷ | 5 | × | ( | 12 | ÷ | 5 | ) |
| ( | 12 | ÷ | 5 | ) | − | x | = | 2 | x | ÷ | 5 | × | 12 | ÷ | 5 |
| ( | 12 | ÷ | 5 | ) | − | x | = | 24 25 | x |
| 12 | ÷ | 5 | − | x | = | 24 25 | x |
12 5 | − | x | = | 24 25 | x |
| - | x | − | 24 25 | x | = | - | 12 5 |
| - | 49 25 | x | = | - | 12 5 |
12 5 | = | 49 25 | x |
49 25 | x | = | 12 5 |
| x | = | 12 5 | ÷ | 49 25 |
| = | 12 5 | × | 25 49 |
| = | 12 | × | 5 49 |
| x | = | 60 49 |
| x | = | 1.22449 |