| 1000 | ÷ | x | + | 1000 | ÷ | ( | x | + | 10 | ) | = | 150 |
| 方程两边同时乘以: | x |
| 1000 | + | 1000 | ÷ | ( | x | + | 10 | ) | × | x | = | 150 | x |
| 方程两边同时乘以: | ( | x | + | 10 | ) |
| 1000 | ( | x | + | 10 | ) | + | 1000 | x | = | 150 | x | ( | x | + | 10 | ) |
| 1000 | x | + | 1000 | × | 10 | + | 1000 | x | = | 150 | x | ( | x | + | 10 | ) |
| 1000 | x | + | 1000 | × | 10 | + | 1000 | x | = | 150 | x | x | + | 150 | x | × | 10 |
| 1000 | x | + | 10000 | + | 1000 | x | = | 150 | x | x | + | 1500 | x |
| 2000 | x | + | 10000 | = | 150 | x | x | + | 1500 | x |
| x1= | - | 20 3 |
| x2=10 |