( | 104263 20 | + | ( | X | − | 1136893 100 | ) | X | × | 75 100 | ) | = | 281709 50 |
方程左边 = | 104263 20 | + | ( | X | − | 1136893 100 | ) | X | × | 75 100 |
= | 104263 20 | + | X | X | × | 75 100 | − | 1136893 100 | X | × | 75 100 |
= | 104263 20 | + | X | X | × | 75 100 | − | 3410679 400 | X |
104263 20 | + | X | X | × | 75 100 | − | 3410679 400 | X | = | 281709 50 |