| - | 19 | x | ÷ | 3 | − | 17 | ÷ | 3 | = | ( | - | 5 | ÷ | 6 | ) | ( | - | 2 | x | ÷ | 5 | + | 13 | ÷ | 4 | ) |
| 方程左边 = | - | 19 3 | x | − | 17 3 |
| - | 19 3 | x | − | 17 3 | = | ( | - | 5 | ÷ | 6 | ) | ( | - | 2 | x | ÷ | 5 | + | 13 | ÷ | 4 | ) |
| 方程右边 = | - | 5 | ÷ | 6 | × | ( | - | 2 | x | ÷ | 5 | + | 13 | ÷ | 4 | ) |
| = | - | 5 6 | ( | - | 2 | x | ÷ | 5 | + | 13 | ÷ | 4 | ) |
| = | 5 6 | × | 2 | x | ÷ | 5 | − | 5 6 | × | 13 | ÷ | 4 |
| = | 1 3 | x | − | 65 24 |
| - | 19 3 | x | − | 17 3 | = | 1 3 | x | − | 65 24 |
| - | 19 3 | x | − | 1 3 | x | = | - | 65 24 | + | 17 3 |
| - | 20 3 | x | = | - | 65 24 | + | 17 3 |
| - | 20 3 | x | = | 71 24 |
| - | 71 24 | = | 20 3 | x |
20 3 | x | = | - | 71 24 |
| x | = | - | 71 24 | ÷ | 20 3 |
| = | - | 71 24 | × | 3 20 |
| = | - | 71 8 | × | 1 20 |
| x | = | - | 71 160 |
| x | = | - 0.44375 |