| X | − | X | ÷ | ( | 1 | + | 6 100 | ) | × | 6 100 | = | 5000000 |
| 方程两边同时乘以: | ( | 1 | + | 6 100 | ) |
| X | ( | 1 | + | 6 100 | ) | − | X | × | 6 100 | = | 5000000 | ( | 1 | + | 6 100 | ) |
| X | × | 1 | + | X | × | 6 100 | − | X | × | 6 100 | = | 5000000 | ( | 1 | + | 6 100 | ) |
| X | × | 1 | + | X | × | 6 100 | − | X | × | 6 100 | = | 5000000 | × | 1 | + | 5000000 | × | 6 100 |
| X | × | 1 | + | X | × | 6 100 | − | X | × | 6 100 | = | 5000000 | + | 300000 |
| 1 | X | = | 5300000 |
| X | = | 5300000 |