| X | − | X | ÷ | ( | 1 | + | 6 100 | ) | × | 6 100 | − | X | ÷ | ( | 1 | + | 6 100 | ) | × | 6 100 | × | 12 100 | = | 65000 |
| 方程两边同时乘以: | ( | 1 | + | 6 100 | ) |
| X | ( | 1 | + | 6 100 | ) | − | X | × | 6 100 | − | X | ÷ | ( | 1 | + | 6 100 | ) | × | 6 100 | × | 12 100 | ( | 1 | + | 6 100 | ) | = | 65000 | ( | 1 | + | 6 100 | ) |
| X | × | 1 | + | X | × | 6 100 | − | X | × | 6 100 | − | X | ÷ | ( | 1 | + | 6 100 | ) | × | 6 100 | × | 12 100 | ( | 1 | + | 6 100 | ) | = | 65000 | ( | 1 | + | 6 100 | ) |
| X | × | 1 | + | X | × | 6 100 | − | X | × | 6 100 | − | X | ÷ | ( | 1 | + | 6 100 | ) | × | 6 100 | × | 12 100 | ( | 1 | + | 6 100 | ) | = | 65000 | × | 1 | + | 65000 | × | 6 100 |
| X | × | 1 | + | X | × | 6 100 | − | X | × | 6 100 | − | X | ÷ | ( | 1 | + | 6 100 | ) | × | 9 1250 | ( | 1 | + | 6 100 | ) | = | 65000 | + | 3900 |
| 1 | X | − | X | ÷ | ( | 1 | + | 6 100 | ) | × | 9 1250 | ( | 1 | + | 6 100 | ) | = | 68900 |
| 方程两边同时乘以: | ( | 1 | + | 6 100 | ) |
| 1 | X | ( | 1 | + | 6 100 | ) | − | X | × | 9 1250 | ( | 1 | + | 6 100 | ) | = | 68900 | ( | 1 | + | 6 100 | ) |
| 1 | X | × | 1 | + | 1 | X | × | 6 100 | − | X | × | 9 1250 | ( | 1 | + | 6 100 | ) | = | 68900 | ( | 1 | + | 6 100 | ) |
| 1 | X | × | 1 | + | 1 | X | × | 6 100 | − | X | × | 9 1250 | ( | 1 | + | 6 100 | ) | = | 68900 | × | 1 | + | 68900 | × | 6 100 |
| 1 | X | + | 3 50 | X | − | X | × | 9 1250 | ( | 1 | + | 6 100 | ) | = | 68900 | + | 4134 |
53 50 | X | − | X | × | 9 1250 | ( | 1 | + | 6 100 | ) | = | 73034 |
53 50 | X | − | X | × | 9 1250 | × | 1 | − | X | × | 9 1250 | × | 6 100 | = | 73034 |
53 50 | X | − | X | × | 9 1250 | − | X | × | 27 62500 | = | 73034 |
65773 62500 | X | = | 73034 |
| X | = | 73034 | ÷ | 65773 62500 |
| = | 73034 | × | 62500 65773 |
| = | 1378 | × | 62500 1241 |
| X | = | 86125000 1241 |
| X | = | 69399.677679 |