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