| ( | 150 | − | 10000 | ÷ | x | ) | ( | 404 25 | + | x | ) | = | 15100 |
| 150 | ( | 404 25 | + | x | ) | − | 10000 | ÷ | x | × | ( | 404 25 | + | x | ) | = | 15100 |
| 方程两边同时乘以: | x |
| 150 | ( | 404 25 | + | x | ) | x | − | 10000 | ( | 404 25 | + | x | ) | = | 15100 | x |
| 150 | × | 404 25 | x | + | 150 | x | x | − | 10000 | ( | 404 25 | + | x | ) | = | 15100 | x |
| 2424 | x | + | 150 | x | x | − | 10000 | ( | 404 25 | + | x | ) | = | 15100 | x |
| 2424 | x | + | 150 | x | x | − | 10000 | × | 404 25 | − | 10000 | x | = | 15100 | x |
| 2424 | x | + | 150 | x | x | − | 161600 | − | 10000 | x | = | 15100 | x |
| - | 7576 | x | + | 150 | x | x | − | 161600 | = | 15100 | x |