| 19 | ÷ | 4 | = | ( | - | 3 | ÷ | 2 | ) | ( | - | 1 | ÷ | 8 | ) | + | x | ÷ | 2 |
| 方程左边 = | 19 4 |
19 4 | = | ( | - | 3 | ÷ | 2 | ) | ( | - | 1 | ÷ | 8 | ) | + | x | ÷ | 2 |
| 方程右边 = | - | 3 | ÷ | 2 | × | ( | - | 1 | ÷ | 8 | ) | + | 1 2 | x |
| = | - | 3 2 | ( | - | 1 | ÷ | 8 | ) | + | 1 2 | x |
| = | 3 2 | × | 1 | ÷ | 8 | + | 1 2 | x |
| = | 3 16 | + | 1 2 | x |
19 4 | = | 3 16 | + | 1 2 | x |
| - | 1 2 | x | = | 3 16 | − | 19 4 |
| - | 1 2 | x | = | - | 73 16 |
73 16 | = | 1 2 | x |
1 2 | x | = | 73 16 |
| x | = | 73 16 | ÷ | 1 2 |
| = | 73 16 | × | 2 |
| = | 73 8 | × | 1 |
| x | = | 73 8 |
| x | = | 9.125 |