| 200 | − | ( | x | − | 3 | ) | = | 150 | ( | x | + | 5 | ) |
| 方程左边 = | 200 | − | x | + | 3 |
| = | 203 | − | x |
| 203 | − | x | = | 150 | ( | x | + | 5 | ) |
| 方程右边 = | 150 | x | + | 150 | × | 5 |
| = | 150 | x | + | 750 |
| 203 | − | x | = | 150 | x | + | 750 |
| - | x | − | 150 | x | = | 750 | − | 203 |
| - | 151 | x | = | 750 | − | 203 |
| - | 151 | x | = | 547 |
| - | 547 | = | 151 | x |
| 151 | x | = | - | 547 |
| x | = | - | 547 | ÷ | 151 |
| = | - | 547 | × | 1 151 |
| x | = | - | 547 151 |
| x | = | - 3.622517 |