| x | + | 2 | x | − | 3 | + | ( | 2 | x | − | 4 | ) | ÷ | 3 | = | 36 |
| 方程左边 = | 3 | x | − | 3 | + | ( | 2 | x | − | 4 | ) | × | 1 3 |
| 3 | x | − | 3 | + | ( | 2 | x | − | 4 | ) | × | 1 3 | = | 36 |
| 方程左边 = | 3 | x | − | 3 | + | 2 | x | × | 1 3 | − | 4 | × | 1 3 |
| = | 3 | x | − | 3 | + | 2 3 | x | − | 4 3 |
| = | 11 3 | x | − | 13 3 |
11 3 | x | − | 13 3 | = | 36 |
11 3 | x | = | 36 | + | 13 3 |
11 3 | x | = | 121 3 |
| x | = | 121 3 | ÷ | 11 3 |
| = | 121 3 | × | 3 11 |
| = | 11 | × | 1 |
| x | = | 11 |