| ( | 7600 | ÷ | x | + | 6700 | ÷ | x | + | 10000 | ÷ | x | ) | = | 150 |
| 7600 | ÷ | x | + | 6700 | ÷ | x | + | 10000 | ÷ | x | = | 150 |
| 方程两边同时乘以: | x |
| 7600 | + | 6700 | ÷ | 1 | × | 1 | + | 10000 | ÷ | 1 | × | 1 | = | 150 | x |
| - | 150 | x | = | - | 7600 | − | 6700 | ÷ | 1 | × | 1 | − | 10000 | ÷ | 1 | × | 1 |
| - | 150 | x | = | - | 7600 | − | 6700 | − | 10000 |
| - | 150 | x | = | - | 24300 |
| 24300 | = | 150 | x |
| 150 | x | = | 24300 |
| x | = | 24300 | ÷ | 150 |
| = | 24300 | × | 1 150 |
| = | 162 | × | 1 |
| x | = | 162 |