| - | 11 | p | + | 11 | ( | 6 | p | + | 4 | ) | = | 2 | ( | 22 | + | 5 | p | ) |
| 方程左边 = | - | 11 | p | + | 11 | × | 6 | p | + | 11 | × | 4 |
| = | - | 11 | p | + | 66 | p | + | 44 |
| = | 55 | p | + | 44 |
| 55 | p | + | 44 | = | 2 | ( | 22 | + | 5 | p | ) |
| 方程右边 = | 2 | × | 22 | + | 2 | × | 5 | p |
| = | 44 | + | 10 | p |
| 55 | p | + | 44 | = | 44 | + | 10 | p |
| 55 | p | − | 10 | p | = | 44 | − | 44 |
| 45 | p | = | 44 | − | 44 |
| 45 | p | = | 0 |
| p | = | 0 | ÷ | 45 |
| = | 0 | × | 1 45 |
| p | = | 0 |