| x | − | 3 | ÷ | 4 | × | ( | x | − | 1 4 | ( | x | − | 3 | ÷ | 7 | ) | ) | = | 3 | ÷ | 16 | × | ( | x | − | 3 | ÷ | 7 | ) |
| 方程左边 = | x | − | 3 4 | ( | x | − | 1 4 | ( | x | − | 3 | ÷ | 7 | ) | ) |
| x | − | 3 4 | ( | x | − | 1 4 | ( | x | − | 3 | ÷ | 7 | ) | ) | = | 3 | ÷ | 16 | × | ( | x | − | 3 | ÷ | 7 | ) |
| 方程左边 = | x | − | 3 4 | x | + | 3 4 | × | 1 4 | ( | x | − | 3 | ÷ | 7 | ) |
| = | x | − | 3 4 | x | + | 3 16 | ( | x | − | 3 | ÷ | 7 | ) |
| = | 1 4 | x | + | 3 16 | ( | x | − | 3 | ÷ | 7 | ) |
| = | 1 4 | x | + | 3 16 | x | − | 3 16 | × | 3 | ÷ | 7 |
| = | 1 4 | x | + | 3 16 | x | − | 9 112 |
| = | 7 16 | x | − | 9 112 |
7 16 | x | − | 9 112 | = | 3 | ÷ | 16 | × | ( | x | − | 3 | ÷ | 7 | ) |
| 方程右边 = | 3 16 | ( | x | − | 3 | ÷ | 7 | ) |
7 16 | x | − | 9 112 | = | 3 16 | ( | x | − | 3 | ÷ | 7 | ) |
| 方程右边 = | 3 16 | x | − | 3 16 | × | 3 | ÷ | 7 |
| = | 3 16 | x | − | 9 112 |
7 16 | x | − | 9 112 | = | 3 16 | x | − | 9 112 |
7 16 | x | − | 3 16 | x | = | - | 9 112 | + | 9 112 |
1 4 | x | = | - | 9 112 | + | 9 112 |
1 4 | x | = | - | 0 |
| x | = | - | 0 | ÷ | 1 4 |
| = | - | 0 | × | 4 |
| = | - | 0 | × | 1 |
| x | = | 0 |