| - | 1 2 | ( | 3 | − | 1 2 | x | x | ) | ( | x | + | 3 | ) | − | ( | 2 | − | x | ) | ( | 2 | − | 1 2 | x | x | ) | + | ( | 5 | − | x | x | ) | × | 5 2 | = | 5 |
| 方程左边 = | - | 1 2 | × | 3 | ( | x | + | 3 | ) | + | 1 2 | × | 1 2 | x | x | ( | x | + | 3 | ) | − | ( | 2 | − | x | ) | ( | 2 | − | 1 2 | x | x | ) | + | ( | 5 | − | x | x | ) | × | 5 2 |
| = | - | 3 2 | ( | x | + | 3 | ) | + | 1 4 | x | x | ( | x | + | 3 | ) | − | ( | 2 | − | x | ) | ( | 2 | − | 1 2 | x | x | ) | + | ( | 5 | − | x | x | ) | × | 5 2 |
| = | - | 3 2 | x | − | 3 2 | × | 3 | + | 1 4 | x | x | ( | x | + | 3 | ) | − | ( | 2 | − | x | ) | ( | 2 | − | 1 2 | x | x | ) | + | ( | 5 | − | x | x | ) | × | 5 2 |
| = | - | 3 2 | x | − | 9 2 | + | 1 4 | x | x | ( | x | + | 3 | ) | − | ( | 2 | − | x | ) | ( | 2 | − | 1 2 | x | x | ) | + | ( | 5 | − | x | x | ) | × | 5 2 |
| = | - | 3 2 | x | − | 9 2 | + | 1 4 | x | x | x | + | 1 4 | x | x | × | 3 | − | ( | 2 | − | x | ) |
| = | - | 3 2 | x | − | 9 2 | + | 1 4 | x | x | x | + | 3 4 | x | x | − | ( | 2 | − | x | ) | ( | 2 | − | 1 2 | x | x | ) |
| = | - | 3 2 | x | − | 9 2 | + | 1 4 | x | x | x | + | 3 4 | x | x | − | 2 | ( | 2 | − | 1 2 | x | x | ) |
| = | - | 3 2 | x | − | 9 2 | + | 1 4 | x | x | x | + | 3 4 | x | x | − | 2 | × | 2 |
| = | - | 3 2 | x | − | 9 2 | + | 1 4 | x | x | x | + | 3 4 | x | x | − | 4 | + | 1 |
| = | - | 3 2 | x | − | 17 2 | + | 1 4 | x | x | x | + | 3 4 | x | x | + | 1 | x |
| = | - | 3 2 | x | − | 17 2 | + | 1 4 | x | x | x | + | 3 4 | x | x | + | 1 | x |
| = | 1 2 | x | − | 17 2 | + | 1 4 | x | x | x | + | 3 4 | x | x | + | 1 | x |
| = | 1 2 | x | − | 17 2 | + | 1 4 | x | x | x | + | 3 4 | x | x | + | 1 | x |
| = | 1 2 | x | − | 17 2 | + | 1 4 | x | x | x | + | 3 4 | x | x | + | 1 | x |
| = | 1 2 | x | + | 4 | + | 1 4 | x | x | x | + | 3 4 | x | x | + | 1 | x |
1 2 | x | + | 4 | + | 1 4 | x | x | x | + | 3 4 | x | x | + | 1 | x | = | 5 |