| 10 | x | + | ( | 4 | x | + | 1 | ) | = | 10 | ( | 4 | x | + | 1 | ) | + | x | − | 63 |
| 方程左边 = | 10 | x | + | 4 | x | + | 1 |
| = | 14 | x | + | 1 |
| 14 | x | + | 1 | = | 10 | ( | 4 | x | + | 1 | ) | + | x | − | 63 |
| 方程右边 = | 10 | × | 4 | x | + | 10 | × | 1 | + | x | − | 63 |
| = | 40 | x | + | 10 | + | x | − | 63 |
| = | 41 | x | − | 53 |
| 14 | x | + | 1 | = | 41 | x | − | 53 |
| 14 | x | − | 41 | x | = | - | 53 | − | 1 |
| - | 27 | x | = | - | 53 | − | 1 |
| - | 27 | x | = | - | 54 |
| 54 | = | 27 | x |
| 27 | x | = | 54 |
| x | = | 54 | ÷ | 27 |
| = | 54 | × | 1 27 |
| = | 2 | × | 1 |
| x | = | 2 |