| m | + | 1 | ÷ | ( | 1 | − | m | ) | + | ( | m | − | 1 | ) | ÷ | m | = | 53 | ÷ | 12 |
| 方程两边同时乘以: | ( | 1 | − | m | ) |
| m | ( | 1 | − | m | ) | + | 1 | + | ( | m | − | 1 | ) | ÷ | m | × | ( | 1 | − | m | ) | = | 53 | ÷ | 12 | × | ( | 1 | − | m | ) |
| m | × | 1 | − | m | m | + | 1 | + | ( | m | − | 1 | ) | ÷ | m | × | ( | 1 | − | m | ) | = | 53 | ÷ | 12 | × | ( | 1 | − | m | ) |
| m | × | 1 | − | m | m | + | 1 | + | ( | m | − | 1 | ) | ÷ | m | × | ( | 1 | − | m | ) | = | 53 | ÷ | 12 | × | 1 | − | 53 | ÷ | 12 | × | m |
| m | × | 1 | − | m | m | + | 1 | + | ( | m | − | 1 | ) | ÷ | m | × | ( | 1 | − | m | ) | = | 53 12 | − | 53 12 | m |
| 方程两边同时乘以: | m |
| 1 | m | m | − | m | m | m | + | 1 | m | + | ( | m | − | 1 | ) | ( | 1 | − | m | ) | = | 53 12 | m | − | 53 12 | m | m |
| 1 | m | m | − | m | m | m | + | 1 | m | + | m | ( | 1 | − | m | ) | − | 1 | ( | 1 | − | m | ) | = | 53 12 | m | − | 53 12 | m | m |
| 1 | m | m | − | m | m | m | + | 1 | m | + | m | × | 1 | − | m | m | = | 53 12 | m | − | 53 12 | m | m |
| 1 | m | m | − | m | m | m | + | 2 | m | − | m | m | − | 1 | ( | 1 | − | m | ) | = | 53 12 | m | − | 53 12 | m | m |
| 1 | m | m | − | m | m | m | + | 2 | m | − | m | m | − | 1 | × | 1 | = | 53 12 | m | − | 53 12 | m | m |
| 1 | m | m | − | m | m | m | + | 2 | m | − | m | m | − | 1 | + | 1 | = | 53 12 | m | − | 53 12 | m | m |
| 1 | m | m | − | m | m | m | + | 3 | m | − | m | m | − | 1 | = | 53 12 | m | − | 53 12 | m | m |
| m1= | - | 1 3 |
| m2= | 3 4 |
| m3=4 |