X | − | ( | X | ÷ | 103 100 | × | 3 100 | + | X | ÷ | 103 100 | × | 3 100 | × | 3 25 | ) | = | 124290 |
方程左边 = | X | − | X | ÷ | 103 100 | × | 3 100 | − | X | ÷ | 103 100 | × | 3 100 | × | 3 25 |
= | X | − | X | × | 3 103 | − | X | × | 9 2575 |
= | 2491 2575 | X |
2491 2575 | X | = | 124290 |
X | = | 124290 | ÷ | 2491 2575 |
= | 124290 | × | 2575 2491 |
X | = | 320046750 2491 |
X | = | 128481.232437 |