| ( | 22148 5 | + | 5 | n | ) | ÷ | ( | 904 | + | n | ) | = | 493 100 |
| 方程两边同时乘以: | ( | 904 | + | n | ) |
| ( | 22148 5 | + | 5 | n | ) | = | 493 100 | ( | 904 | + | n | ) |
22148 5 | + | 5 | n | = | 493 100 | ( | 904 | + | n | ) |
22148 5 | + | 5 | n | = | 493 100 | × | 904 | + | 493 100 | n |
22148 5 | + | 5 | n | = | 111418 25 | + | 493 100 | n |
| 5 | n | − | 493 100 | n | = | 111418 25 | − | 22148 5 |
7 100 | n | = | 111418 25 | − | 22148 5 |
7 100 | n | = | 678 25 |
| n | = | 678 25 | ÷ | 7 100 |
| = | 678 25 | × | 100 7 |
| = | 678 | × | 4 7 |
| n | = | 2712 7 |
| n | = | 387.428571 |