| ( | 2000 | X | ) | ÷ | ( | 10000 | + | 480 | ) | = | 140 100 |
| 方程两边同时乘以: | ( | 10000 | + | 480 | ) |
| ( | 2000 | X | ) | = | 140 100 | ( | 10000 | + | 480 | ) |
| 2000 | X | = | 140 100 | ( | 10000 | + | 480 | ) |
| 2000 | X | = | 140 100 | × | 10000 | + | 140 100 | × | 480 |
| 2000 | X | = | 14000 | + | 672 |
| 2000 | X | = | 14672 |
| X | = | 14672 | ÷ | 2000 |
| = | 14672 | × | 1 2000 |
| = | 917 | × | 1 125 |
| X | = | 917 125 |
| X | = | 7.336 |