| 1 | ÷ | 60 | × | 2 | x | + | ( | x | + | 2 | ) | × | 1 | ÷ | 60 | × | 6 | = | 0 |
| 方程左边 = | 1 30 | x | + | ( | x | + | 2 | ) | × | 1 10 |
1 30 | x | + | ( | x | + | 2 | ) | × | 1 10 | = | 0 |
| 方程左边 = | 1 30 | x | + | x | × | 1 10 | + | 2 | × | 1 10 |
| = | 1 30 | x | + | x | × | 1 10 | + | 1 5 |
| = | 2 15 | x | + | 1 5 |
2 15 | x | + | 1 5 | = | 0 |
2 15 | x | = | 0 | − | 1 5 |
2 15 | x | = | - | 1 5 |
| x | = | - | 1 5 | ÷ | 2 15 |
| = | - | 1 5 | × | 15 2 |
| = | - | 1 | × | 3 2 |
| x | = | - | 3 2 |
| x | = | - 1.5 |