| ( | 1 | − | 5 | ÷ | 9 | ) | + | 8 | = | 3 | ÷ | 4 | × | x | − | 3 |
| 方程左边 = | 1 | − | 5 | ÷ | 9 | + | 8 |
| = | 1 | − | 5 9 | + | 8 |
| = | 76 9 |
76 9 | = | 3 | ÷ | 4 | × | x | − | 3 |
| 方程右边 = | 3 4 | x | − | 3 |
76 9 | = | 3 4 | x | − | 3 |
| - | 3 4 | x | = | - | 3 | − | 76 9 |
| - | 3 4 | x | = | - | 103 9 |
103 9 | = | 3 4 | x |
3 4 | x | = | 103 9 |
| x | = | 103 9 | ÷ | 3 4 |
| = | 103 9 | × | 4 3 |
| x | = | 412 27 |
| x | = | 15.259259 |