3209173 50 | − | X | × | 3 10000 | + | ( | X | − | X | × | 3 10000 | ) | × | 1 4 | = | X |
| 方程左边 = | 3209173 50 | − | 3 10000 | X | + | X | × | 1 4 | − | X | × | 3 10000 | × | 1 4 |
| = | 3209173 50 | − | 3 10000 | X | + | X | × | 1 4 | − | X | × | 3 40000 |
| = | 3209173 50 | + | 1997 8000 | X |
3209173 50 | + | 1997 8000 | X | = | X |
1997 8000 | X | − | X | = | - | 3209173 50 |
| - | 6003 8000 | X | = | - | 3209173 50 |
3209173 50 | = | 6003 8000 | X |
6003 8000 | X | = | 3209173 50 |
| X | = | 3209173 50 | ÷ | 6003 8000 |
| = | 3209173 50 | × | 8000 6003 |
| = | 3209173 | × | 160 6003 |
| X | = | 513467680 6003 |
| X | = | 85535.179077 |