| ( | 5 | ( | 500 | + | X | ) | + | 246 | ) | ÷ | ( | 600 | + | X | ) | = | 24 5 |
| 方程两边同时乘以: | ( | 600 | + | X | ) |
| ( | 5 | ( | 500 | + | X | ) | + | 246 | ) | = | 24 5 | ( | 600 | + | X | ) |
| 5 | ( | 500 | + | X | ) | + | 246 | = | 24 5 | ( | 600 | + | X | ) |
| 5 | ( | 500 | + | X | ) | + | 246 | = | 24 5 | × | 600 | + | 24 5 | X |
| 5 | ( | 500 | + | X | ) | + | 246 | = | 2880 | + | 24 5 | X |
| 5 | × | 500 | + | 5 | X | + | 246 | = | 2880 | + | 24 5 | X |
| 2500 | + | 5 | X | + | 246 | = | 2880 | + | 24 5 | X |
| 2746 | + | 5 | X | = | 2880 | + | 24 5 | X |
| 5 | X | − | 24 5 | X | = | 2880 | − | 2746 |
1 5 | X | = | 2880 | − | 2746 |
1 5 | X | = | 134 |
| X | = | 134 | ÷ | 1 5 |
| = | 134 | × | 5 |
| X | = | 670 |