| 6 | + | 4 | ( | 1 | − | 16 | ( | 9 | − | 2 | x | ) | ) | = | - | 13 | ( | 2 | x | + | 8 | ) |
| 方程左边 = | 6 | + | 4 | × | 1 | − | 4 | × | 16 | ( | 9 | − | 2 | x | ) |
| = | 6 | + | 4 | − | 64 | ( | 9 | − | 2 | x | ) |
| = | 10 | − | 64 | ( | 9 | − | 2 | x | ) |
| = | 10 | − | 64 | × | 9 | + | 64 | × | 2 | x |
| = | 10 | − | 576 | + | 128 | x |
| = | - | 566 | + | 128 | x |
| - | 566 | + | 128 | x | = | - | 13 | ( | 2 | x | + | 8 | ) |
| 方程右边 = | - | 13 | × | 2 | x | − | 13 | × | 8 |
| = | - | 26 | x | − | 104 |
| - | 566 | + | 128 | x | = | - | 26 | x | − | 104 |
| 128 | x | + | 26 | x | = | - | 104 | + | 566 |
| 154 | x | = | - | 104 | + | 566 |
| 154 | x | = | 462 |
| x | = | 462 | ÷ | 154 |
| = | 462 | × | 1 154 |
| = | 3 | × | 1 |
| x | = | 3 |