261 1000 | ( | 11 50 | − | k | ) | ÷ | ( | 11 50 | + | 2 | k | ) | + | ( | 1 | − | 261 1000 | ) | ( | 631 500 | − | k | ) | ÷ | ( | 631 500 | + | 2 | k | ) | = | 0 |
| 方程两边同时乘以: | ( | 11 50 | + | 2 | k | ) |
261 1000 | ( | 11 50 | − | k | ) | + | ( | 1 | − | 261 1000 | ) | ( | 631 500 | − | k | ) | ÷ | ( | 631 500 | + | 2 | k | ) | × | ( | 11 50 | + | 2 | k | ) | = | 0 |
261 1000 | × | 11 50 | − | 261 1000 | k | + | ( | 1 | − | 261 1000 | ) | ( | 631 500 | − | k | ) | ÷ | ( | 631 500 | + | 2 | k | ) | × | ( | 11 50 | + | 2 | k | ) | = | 0 |
2871 50000 | − | 261 1000 | k | + | ( | 1 | − | 261 1000 | ) | ( | 631 500 | − | k | ) | ÷ | ( | 631 500 | + | 2 | k | ) | × | ( | 11 50 | + | 2 | k | ) | = | 0 |
| 方程两边同时乘以: | ( | 631 500 | + | 2 | k | ) |
2871 50000 | ( | 631 500 | + | 2 | k | ) | − | 261 1000 | k | ( | 631 500 | + | 2 | k | ) | + | ( | 1 | − | 261 1000 | ) | ( | 631 500 | − | k | ) | ( | 11 50 | + | 2 | k | ) | = | 0 |
2871 50000 | × | 631 500 | + | 2871 50000 | × | 2 | k | − | 261 1000 | k | ( | 631 500 | + | 2 | k | ) | + | ( | 1 | − | 261 1000 | ) | ( | 631 500 | − | k | ) | ( | 11 50 | + | 2 | k | ) | = | 0 |
1811601 25000000 | + | 2871 25000 | k | − | 261 1000 | k | ( | 631 500 | + | 2 | k | ) | + | ( | 1 | − | 261 1000 | ) | ( | 631 500 | − | k | ) | ( | 11 50 | + | 2 | k | ) | = | 0 |
1811601 25000000 | + | 2871 25000 | k | − | 261 1000 | k | × | 631 500 | − | 261 1000 | k | × | 2 | k | + | ( | 1 | − | 261 1000 | ) | ( | 631 500 | − | k | ) | = | 0 |
1811601 25000000 | + | 2871 25000 | k | − | 164691 500000 | k | − | 261 500 | k | k | + | ( | 1 | − | 261 1000 | ) | ( | 631 500 | − | k | ) | ( | 11 50 | + | 2 | k | ) | = | 0 |