| ( | 1050 | × | 12 | − | 70 100 | × | 60 | x | × | 36 500 | ) | ÷ | ( | 30 100 | × | 60 | x | + | 2 100 | × | 60 | x | ) | = | 0 |
| 方程两边同时乘以: | ( | 30 100 | × | 60 | x | + | 2 100 | × | 60 | x | ) |
| ( | 1050 | × | 12 | − | 70 100 | × | 60 | x | × | 36 500 | ) | = | 0 |
| 1050 | × | 12 | − | 70 100 | × | 60 | x | × | 36 500 | = | 0 |
| 12600 | − | 378 125 | x | = | 0 |
| - | 378 125 | x | = | 0 | − | 12600 |
| - | 378 125 | x | = | - | 12600 |
| 12600 | = | 378 125 | x |
378 125 | x | = | 12600 |
| x | = | 12600 | ÷ | 378 125 |
| = | 12600 | × | 125 378 |
| = | 100 | × | 125 3 |
| x | = | 12500 3 |
| x | = | 4166.666667 |