179 | ( | 961 1000 | − | 69 250 | x | ) | ( | 891 1000 | − | 227 500 | x | ) | + | 443 | ( | 891 1000 | − | 227 500 | x | ) | + | 336 | = | 7 5 | ( | 211 | ( | 961 1000 | − | 69 250 | x | ) | ( | 891 1000 | − | 227 500 | x | ) | + | 620 | ( | 891 1000 | − | 227 500 | x | ) | − | 60 | ) |
方程左边 = | 179 | × | 961 1000 | ( | 891 1000 | − | 227 500 | x | ) | − | 179 | × | 69 250 | x | ( | 891 1000 | − | 227 500 | x | ) | + | 443 | ( | 891 1000 | − | 227 500 | x | ) | + | 336 |
= | 172019 1000 | ( | 891 1000 | − | 227 500 | x | ) | − | 12351 250 | x | ( | 891 1000 | − | 227 500 | x | ) | + | 443 | ( | 891 1000 | − | 227 500 | x | ) | + | 336 |
= | 172019 1000 | × | 891 1000 | − | 172019 1000 | × | 227 500 | x | − | 12351 250 | x | ( | 891 1000 | − | 227 500 | x | ) | + | 443 | ( | 891 1000 | − | 227 500 | x | ) | + | 336 |
= | 153268929 1000000 | − | 39048313 500000 | x | − | 12351 250 | x | ( | 891 1000 | − | 227 500 | x | ) | + | 443 | ( | 891 1000 | − | 227 500 | x | ) | + | 336 |
= | 489268929 1000000 | − | 39048313 500000 | x | − | 12351 250 | x | ( | 891 1000 | − | 227 500 | x | ) | + | 443 | ( | 891 1000 | − | 227 500 | x | ) |
= | 489268929 1000000 | − | 39048313 500000 | x | − | 12351 250 | x | × | 891 1000 | + | 12351 250 | x | × | 227 500 | x | + | 443 | ( | 891 1000 | − | 227 500 | x | ) |
= | 489268929 1000000 | − | 39048313 500000 | x | − | 11004741 250000 | x | + | 2803677 125000 | x | x | + | 443 | ( | 891 1000 | − | 227 500 | x | ) |