| 600 | ( | 1 | − | X | ) | ÷ | ( | ( | 2400 | − | 600 | ( | 1 | − | X | ) | ) | ) | = | 10 100 |
| 方程两边同时乘以: | ( | ( | 2400 | − | 600 | ( | 1 | − | X | ) | ) | ) |
| 600 | ( | 1 | − | X | ) | = | 10 100 | ( | ( | 2400 | − | 600 | ( | 1 | − | X | ) | ) | ) |
| 600 | × | 1 | − | 600 | X | = | 10 100 | ( | ( | 2400 | − | 600 | ( | 1 | − | X | ) | ) | ) |
| 600 | × | 1 | − | 600 | X | = | 10 100 | ( | 2400 | − | 600 | ( | 1 | − | X | ) | ) |
| 600 | − | 600 | X | = | 10 100 | ( | 2400 | − | 600 | ( | 1 | − | X | ) | ) |
| 600 | − | 600 | X | = | 10 100 | × | 2400 | − | 10 100 | × | 600 | ( | 1 | − | X | ) |
| 600 | − | 600 | X | = | 240 | − | 60 | ( | 1 | − | X | ) |
| 600 | − | 600 | X | = | 240 | − | 60 | × | 1 | + | 60 | X |
| 600 | − | 600 | X | = | 240 | − | 60 | + | 60 | X |
| 600 | − | 600 | X | = | 180 | + | 60 | X |
| - | 600 | X | − | 60 | X | = | 180 | − | 600 |
| - | 660 | X | = | 180 | − | 600 |
| - | 660 | X | = | - | 420 |
| 420 | = | 660 | X |
| 660 | X | = | 420 |
| X | = | 420 | ÷ | 660 |
| = | 420 | × | 1 660 |
| = | 7 | × | 1 11 |
| X | = | 7 11 |
| X | = | 0.636364 |