( | 2687 10 | − | 6 | k | ) | ( | 769 | + | 3923 20 | k | ) | − | 3269 100 | × | 76891 100 | k | = | 0 |
方程左边 = | ( | 2687 10 | − | 6 | k | ) | ( | 769 | + | 3923 20 | k | ) | − | 251356679 10000 | k |
( | 2687 10 | − | 6 | k | ) | ( | 769 | + | 3923 20 | k | ) | − | 251356679 10000 | k | = | 0 |
方程左边 = | 2687 10 | ( | 769 | + | 3923 20 | k | ) | − | 6 | k | ( | 769 | + | 3923 20 | k | ) | − | 251356679 10000 | k |
= | 2687 10 | × | 769 | + | 2687 10 | × | 3923 20 | k | − | 6 | k | ( | 769 | + | 3923 20 | k | ) | − | 251356679 10000 | k |
= | 2066303 10 | + | 10541101 200 | k | − | 6 | k | ( | 769 | + | 3923 20 | k | ) | − | 251356679 10000 | k |