| 4 | x | + | 2 | + | x | = | 4 | x | + | 24 | + | ( | 4 | x | + | 24 | ) | ÷ | 6 |
| 方程左边 = | 5 | x | + | 2 |
| 5 | x | + | 2 | = | 4 | x | + | 24 | + | ( | 4 | x | + | 24 | ) | ÷ | 6 |
| 方程右边 = | 4 | x | + | 24 | + | 4 | x | × | 1 6 | + | 24 | × | 1 6 |
| = | 4 | x | + | 24 | + | 2 3 | x | + | 4 |
| = | 14 3 | x | + | 28 |
| 5 | x | + | 2 | = | 14 3 | x | + | 28 |
| 5 | x | − | 14 3 | x | = | 28 | − | 2 |
1 3 | x | = | 28 | − | 2 |
1 3 | x | = | 26 |
| x | = | 26 | ÷ | 1 3 |
| = | 26 | × | 3 |
| x | = | 78 |