| ( | 1 | − | 3 | x | ) | ÷ | 5 | = | ( | x | − | 10 | ) | ÷ | 12 |
| 方程左边 = | 1 | × | 1 5 | − | 3 | x | × | 1 5 |
| = | 1 5 | − | 3 5 | x |
1 5 | − | 3 5 | x | = | ( | x | − | 10 | ) | ÷ | 12 |
| 方程右边 = | x | × | 1 12 | − | 10 | × | 1 12 |
| = | x | × | 1 12 | − | 5 6 |
1 5 | − | 3 5 | x | = | 1 12 | x | − | 5 6 |
| - | 3 5 | x | − | 1 12 | x | = | - | 5 6 | − | 1 5 |
| - | 41 60 | x | = | - | 5 6 | − | 1 5 |
| - | 41 60 | x | = | - | 31 30 |
31 30 | = | 41 60 | x |
41 60 | x | = | 31 30 |
| x | = | 31 30 | ÷ | 41 60 |
| = | 31 30 | × | 60 41 |
| = | 31 | × | 2 41 |
| x | = | 62 41 |
| x | = | 1.512195 |