| 2 | ( | 2 | ÷ | 3 | × | x | + | 1 | ) | = | 7 | ( | 1 | ÷ | 7 | × | x | − | 5 | ÷ | 7 | ) | + | 14 |
| 方程左边 = | 2 | × | 2 | ÷ | 3 | × | x | + | 2 | × | 1 |
| = | 4 3 | x | + | 2 |
4 3 | x | + | 2 | = | 7 | ( | 1 | ÷ | 7 | × | x | − | 5 | ÷ | 7 | ) | + | 14 |
| 方程右边 = | 7 | × | 1 | ÷ | 7 | × | x | − | 7 | × | 5 | ÷ | 7 | + | 14 |
| = | 1 | x | − | 5 | + | 14 |
| = | 1 | x | + | 9 |
4 3 | x | + | 2 | = | 1 | x | + | 9 |
4 3 | x | − | 1 | x | = | 9 | − | 2 |
1 3 | x | = | 9 | − | 2 |
1 3 | x | = | 7 |
| x | = | 7 | ÷ | 1 3 |
| = | 7 | × | 3 |
| x | = | 21 |