| ( | 48 | − | 48 | ÷ | m | × | ( | m | − | 1 2 | ) | ) | ÷ | 8 | = | m | − | 1 2 |
| 48 | ÷ | 8 | − | 48 | ÷ | m | × | ( | m | − | 1 2 | ) | ÷ | 8 | = | m | − | 1 2 |
| 6 | − | 6 | ÷ | m | × | ( | m | − | 1 2 | ) | = | m | − | 1 2 |
| 方程两边同时乘以: | m |
| 6 | m | − | 6 | ( | m | − | 1 2 | ) | = | m | m | − | 1 2 | m |
| 6 | m | − | 6 | m | + | 6 | × | 1 2 | = | m | m | − | 1 2 | m |
| 6 | m | − | 6 | m | + | 3 | = | m | m | − | 1 2 | m |
| 0 | m | + | 3 | = | m | m | − | 1 2 | m |
| m1= | - | 3 2 |
| m2=2 |