| x | + | ( | x | × | 6 5 | + | x | ) | + | ( | x | + | ( | x | × | 6 5 | + | x | ) | ) | ÷ | 2 5 | + | ( | x | + | ( | x | × | 6 5 | + | x | ) | ) | = | 0 |
| 方程左边 = | x | + | x | × | 6 5 | + | x | + | ( | x | + | ( | x | × | 6 5 | + | x | ) | ) | × | 5 2 | + | ( | x | + | ( | x | × | 6 5 | + | x | ) | ) |
| = | 16 5 | x | + | ( | x | + | ( | x | × | 6 5 | + | x | ) | ) | × | 5 2 | + | ( | x | + | ( | x | × | 6 5 | + | x | ) | ) |
| = | 16 5 | x | + | x | × | 5 2 | + | ( | x | × | 6 5 | + | x | ) | × | 5 2 | + | ( | x | + | ( | x | × | 6 5 | + | x | ) | ) |
| = | 57 10 | x | + | ( | x | × | 6 5 | + | x | ) | × | 5 2 | + | ( | x | + | ( | x | × | 6 5 | + | x | ) | ) |
| = | 57 10 | x | + | x | × | 6 5 | × | 5 2 | + | x | × | 5 2 | + | ( | x | + | ( | x | × | 6 5 | + | x | ) | ) |
| = | 57 10 | x | + | x | × | 3 | + | x | × | 5 2 | + | ( | x | + | ( | x | × | 6 5 | + | x | ) | ) |
| = | 56 5 | x | + | ( | x | + | ( | x | × | 6 5 | + | x | ) | ) |
| = | 56 5 | x | + | x | + | ( | x | × | 6 5 | + | x | ) |
| = | 61 5 | x | + | ( | x | × | 6 5 | + | x | ) |
| = | 61 5 | x | + | x | × | 6 5 | + | x |
| = | 72 5 | x |
72 5 | x | = | 0 |
| x | = | 0 | ÷ | 72 5 |
| = | 0 | × | 5 72 |
| x | = | 0 |