| 130 | ( | 11 | ÷ | 3 | + | 2 | x | ÷ | 3 | ) | − | 120 | x | − | 410 | = | 0 |
| 方程左边 = | 130 | × | 11 | ÷ | 3 | + | 130 | × | 2 | x | ÷ | 3 | − | 120 | x | − | 410 |
| = | 1430 3 | + | 260 3 | x | − | 120 | x | − | 410 |
| = | 200 3 | − | 100 3 | x |
200 3 | − | 100 3 | x | = | 0 |
| - | 100 3 | x | = | 0 | − | 200 3 |
| - | 100 3 | x | = | - | 200 3 |
200 3 | = | 100 3 | x |
100 3 | x | = | 200 3 |
| x | = | 200 3 | ÷ | 100 3 |
| = | 200 3 | × | 3 100 |
| = | 2 | × | 1 |
| x | = | 2 |