| 1350 | ÷ | x | + | 10 | = | 1000 | ÷ | ( | 25 | − | x | ) |
| 方程两边同时乘以: | x | , | ( | 25 | − | x | ) |
| 1350 | ( | 25 | − | x | ) | + | 10 | x | ( | 25 | − | x | ) | = | 1000 | x |
| 1350 | × | 25 | − | 1350 | x | + | 10 | x | ( | 25 | − | x | ) | = | 1000 | x |
| 33750 | − | 1350 | x | + | 10 | x | ( | 25 | − | x | ) | = | 1000 | x |
| 33750 | − | 1350 | x | + | 10 | x | × | 25 | − | 10 | x | x | = | 1000 | x |
| 33750 | − | 1350 | x | + | 250 | x | − | 10 | x | x | = | 1000 | x |
| 33750 | − | 1100 | x | − | 10 | x | x | = | 1000 | x |