| ( | ( | 4 | − | x | ) | ÷ | 2 | × | 2 | x | ) | ÷ | 2 | + | ( | ( | 9 | − | x | ) | ÷ | 6 | × | x | ) | ÷ | 2 | = | 26 |
| 方程左边 = | ( | 4 | − | x | ) | ÷ | 2 | × | 2 | x | × | 1 2 | + | ( | ( | 9 | − | x | ) | ÷ | 6 | × | x | ) | × | 1 2 |
| = | ( | 4 | − | x | ) | × | 1 2 | x | + | ( | ( | 9 | − | x | ) | ÷ | 6 | × | x | ) | × | 1 2 |
| = | 4 | × | 1 2 | x | − | x | × | 1 2 | x | + | ( | ( | 9 | − | x | ) | ÷ | 6 | × | x | ) | × | 1 2 |
| = | 2 | x | − | x | × | 1 2 | x | + | ( | ( | 9 | − | x | ) | ÷ | 6 | × | x | ) | × | 1 2 |
| = | 2 | x | − | x | × | 1 2 | x | + | ( | 9 | − | x | ) | ÷ | 6 | × | x | × | 1 2 |
| = | 2 | x | − | x | × | 1 2 | x | + | ( | 9 | − | x | ) | × | 1 12 | x |
| = | 2 | x | − | x | × | 1 2 | x | + | 9 | × | 1 12 | x | − | x | × | 1 12 | x |
| = | 2 | x | − | x | × | 1 2 | x | + | 3 4 | x | − | x | × | 1 12 | x |
| = | 11 4 | x | − | x | × | 1 2 | x | − | x | × | 1 12 | x |
11 4 | x | − | x | × | 1 2 | x | − | x | × | 1 12 | x | = | 26 |