| ( | 2000 | X | ) | ÷ | ( | 10000 | + | 480 | ) | = | 100 100 |
| 方程两边同时乘以: | ( | 10000 | + | 480 | ) |
| ( | 2000 | X | ) | = | 100 100 | ( | 10000 | + | 480 | ) |
| 2000 | X | = | 100 100 | ( | 10000 | + | 480 | ) |
| 2000 | X | = | 100 100 | × | 10000 | + | 100 100 | × | 480 |
| 2000 | X | = | 10000 | + | 480 |
| 2000 | X | = | 10480 |
| X | = | 10480 | ÷ | 2000 |
| = | 10480 | × | 1 2000 |
| = | 131 | × | 1 25 |
| X | = | 131 25 |
| X | = | 5.24 |