| x | + | ( | x | + | 3 | ) | = | 1 | ÷ | 4 | × | ( | 10 | x | + | ( | x | + | 3 | ) | ) |
| 方程左边 = | x | + | x | + | 3 |
| = | 2 | x | + | 3 |
| 2 | x | + | 3 | = | 1 | ÷ | 4 | × | ( | 10 | x | + | ( | x | + | 3 | ) | ) |
| 方程右边 = | 1 4 | ( | 10 | x | + | ( | x | + | 3 | ) | ) |
| 2 | x | + | 3 | = | 1 4 | ( | 10 | x | + | ( | x | + | 3 | ) | ) |
| 方程右边 = | 1 4 | × | 10 | x | + | 1 4 | ( | x | + | 3 | ) |
| = | 5 2 | x | + | 1 4 | ( | x | + | 3 | ) |
| = | 5 2 | x | + | 1 4 | x | + | 1 4 | × | 3 |
| = | 5 2 | x | + | 1 4 | x | + | 3 4 |
| = | 11 4 | x | + | 3 4 |
| 2 | x | + | 3 | = | 11 4 | x | + | 3 4 |
| 2 | x | − | 11 4 | x | = | 3 4 | − | 3 |
| - | 3 4 | x | = | 3 4 | − | 3 |
| - | 3 4 | x | = | - | 9 4 |
9 4 | = | 3 4 | x |
3 4 | x | = | 9 4 |
| x | = | 9 4 | ÷ | 3 4 |
| = | 9 4 | × | 4 3 |
| = | 3 | × | 1 |
| x | = | 3 |