| ( | 300 | × | 65 100 | ) | ÷ | ( | 300 | + | x | ) | = | 25 100 |
| 方程两边同时乘以: | ( | 300 | + | x | ) |
| ( | 300 | × | 65 100 | ) | = | 25 100 | ( | 300 | + | x | ) |
| 300 | × | 65 100 | = | 25 100 | ( | 300 | + | x | ) |
| 300 | × | 65 100 | = | 25 100 | × | 300 | + | 25 100 | x |
| 195 | = | 75 | + | 25 100 | x |
| - | 25 100 | x | = | 75 | − | 195 |
| - | 25 100 | x | = | - | 120 |
| 120 | = | 25 100 | x |
25 100 | x | = | 120 |
| x | = | 120 | ÷ | 25 100 |
| = | 120 | × | 100 25 |
| = | 24 | × | 100 5 |
| x | = | 2400 5 |
| x | = | 480 |