| 7800 | ÷ | x | + | 10000 | ÷ | ( | x | + | 22 | ) | + | 10000 | ÷ | x | = | 150 |
| 方程两边同时乘以: | x |
| 7800 | + | 10000 | ÷ | ( | x | + | 22 | ) | × | x | + | 10000 | ÷ | 1 | × | 1 | = | 150 | x |
| 方程两边同时乘以: | ( | x | + | 22 | ) |
| 7800 | ( | x | + | 22 | ) | + | 10000 | x | + | 10000 | ÷ | 1 | × | 1 | ( | x | + | 22 | ) | = | 150 | x | ( | x | + | 22 | ) |
| 7800 | x | + | 7800 | × | 22 | + | 10000 | x | + | 10000 | ÷ | 1 | × | 1 | ( | x | + | 22 | ) | = | 150 | x | ( | x | + | 22 | ) |
| 7800 | x | + | 7800 | × | 22 | + | 10000 | x | + | 10000 | ÷ | 1 | × | 1 | ( | x | + | 22 | ) | = | 150 | x | x | + | 150 | x | × | 22 |
| 7800 | x | + | 171600 | + | 10000 | x | + | 10000 | ( | x | + | 22 | ) | = | 150 | x | x | + | 3300 | x |
| 17800 | x | + | 171600 | + | 10000 | ( | x | + | 22 | ) | = | 150 | x | x | + | 3300 | x |
| 17800 | x | + | 171600 | + | 10000 | x | + | 10000 | × | 22 | = | 150 | x | x | + | 3300 | x |
| 17800 | x | + | 171600 | + | 10000 | x | + | 220000 | = | 150 | x | x | + | 3300 | x |
| 27800 | x | + | 391600 | = | 150 | x | x | + | 3300 | x |
| x1= | - | 44 3 |
| x2=178 |