| 1 | ÷ | 5 | × | ( | 12 | − | 2 | x | ) | ( | 12 | − | 2 | x | ) | = | 2 | x | × | 2 | x | + | ( | 6 | − | x | ) | ( | 6 | − | x | ) |
| 方程左边 = | 1 5 | ( | 12 | − | 2 | x | ) | ( | 12 | − | 2 | x | ) |
1 5 | ( | 12 | − | 2 | x | ) | ( | 12 | − | 2 | x | ) | = | 2 | x | × | 2 | x | + | ( | 6 | − | x | ) | ( | 6 | − | x | ) |
| 方程左边 = | 1 5 | × | 12 | ( | 12 | − | 2 | x | ) | − | 1 5 | × | 2 | x | ( | 12 | − | 2 | x | ) |
| = | 12 5 | ( | 12 | − | 2 | x | ) | − | 2 5 | x | ( | 12 | − | 2 | x | ) |
| = | 12 5 | × | 12 | − | 12 5 | × | 2 | x | − | 2 5 | x | ( | 12 | − | 2 | x | ) |
| = | 144 5 | − | 24 5 | x | − | 2 5 | x | ( | 12 | − | 2 | x | ) |
| = | 144 5 | − | 24 5 | x | − | 2 5 | x | × | 12 | + | 2 5 | x | × | 2 | x |
| = | 144 5 | − | 24 5 | x | − | 24 5 | x | + | 4 5 | x | x |
| = | 144 5 | − | 48 5 | x | + | 4 5 | x | x |
144 5 | − | 48 5 | x | + | 4 5 | x | x | = | 2 | x | × | 2 | x | + | ( | 6 | − | x | ) | ( | 6 | − | x | ) |
| 方程右边 = | 4 | x | x | + | ( | 6 | − | x | ) | ( | 6 | − | x | ) |
144 5 | − | 48 5 | x | + | 4 5 | x | x | = | 4 | x | x | + | ( | 6 | − | x | ) | ( | 6 | − | x | ) |
| 方程右边 = | 4 | x | x | + | 6 | ( | 6 | − | x | ) | − | x | ( | 6 | − | x | ) |
| = | 4 | x | x | + | 6 | × | 6 | − | 6 | x | − | x | ( | 6 | − | x | ) |
| = | 4 | x | x | + | 36 | − | 6 | x | − | x | ( | 6 | − | x | ) |
| = | 4 | x | x | + | 36 | − | 6 | x | − | x | × | 6 | + | x | x |
| = | 4 | x | x | + | 36 | − | 12 | x | + | x | x |
144 5 | − | 48 5 | x | + | 4 5 | x | x | = | 4 | x | x | + | 36 | − | 12 | x | + | x | x |