| 360 | ÷ | x | × | ( | x | + | 3 | ) | = | 500 | − | 5 |
| 方程两边同时乘以: | x |
| 360 | ( | x | + | 3 | ) | = | 500 | x | − | 5 | x |
| 360 | x | + | 360 | × | 3 | = | 500 | x | − | 5 | x |
| 360 | x | + | 1080 | = | 500 | x | − | 5 | x |
| 360 | x | + | 1080 | = | 495 | x |
| 360 | x | − | 495 | x | = | - | 1080 |
| - | 135 | x | = | - | 1080 |
| 1080 | = | 135 | x |
| 135 | x | = | 1080 |
| x | = | 1080 | ÷ | 135 |
| = | 1080 | × | 1 135 |
| = | 8 | × | 1 |
| x | = | 8 |