| 1 | ÷ | 2 | × | ( | 4 | + | x | ) | = | 1 | ÷ | 2 | × | 5 | × | 6 | − | 1 | ÷ | 2 | × | ( | 5 | − | 2 | ) | ( | 2 | + | x | ) |
| 方程左边 = | 1 2 | ( | 4 | + | x | ) |
1 2 | ( | 4 | + | x | ) | = | 1 | ÷ | 2 | × | 5 | × | 6 | − | 1 | ÷ | 2 | × | ( | 5 | − | 2 | ) | ( | 2 | + | x | ) |
| 方程左边 = | 1 2 | × | 4 | + | 1 2 | x |
| = | 2 | + | 1 2 | x |
| 2 | + | 1 2 | x | = | 1 | ÷ | 2 | × | 5 | × | 6 | − | 1 | ÷ | 2 | × | ( | 5 | − | 2 | ) | ( | 2 | + | x | ) |
| 方程右边 = | 15 | − | 1 2 | ( | 5 | − | 2 | ) | ( | 2 | + | x | ) |
| 2 | + | 1 2 | x | = | 15 | − | 1 2 | ( | 5 | − | 2 | ) | ( | 2 | + | x | ) |
| 方程右边 = | 15 | − | 1 2 | × | 5 | ( | 2 | + | x | ) | + | 1 2 | × | 2 | ( | 2 | + | x | ) |
| = | 15 | − | 5 2 | ( | 2 | + | x | ) | + | 1 | ( | 2 | + | x | ) |
| = | 15 | − | 5 2 | × | 2 | − | 5 2 | x | + | 1 | ( | 2 | + | x | ) |
| = | 15 | − | 5 | − | 5 2 | x | + | 1 | ( | 2 | + | x | ) |
| = | 10 | − | 5 2 | x | + | 1 | ( | 2 | + | x | ) |
| = | 10 | − | 5 2 | x | + | 1 | × | 2 | + | 1 | x |
| = | 10 | − | 5 2 | x | + | 2 | + | 1 | x |
| = | 12 | − | 3 2 | x |
| 2 | + | 1 2 | x | = | 12 | − | 3 2 | x |
1 2 | x | + | 3 2 | x | = | 12 | − | 2 |
| 2 | x | = | 12 | − | 2 |
| 2 | x | = | 10 |
| x | = | 10 | ÷ | 2 |
| = | 10 | × | 1 2 |
| = | 5 | × | 1 |
| x | = | 5 |