x | − | x | × | 13 200 | − | ( | x | + | 28646812 25 | ) | × | 3 10000 | = | 28646812 25 |
方程左边 = | 187 200 | x | − | ( | x | + | 28646812 25 | ) | × | 3 10000 |
187 200 | x | − | ( | x | + | 28646812 25 | ) | × | 3 10000 | = | 28646812 25 |
方程左边 = | 187 200 | x | − | x | × | 3 10000 | − | 28646812 25 | × | 3 10000 |
= | 187 200 | x | − | x | × | 3 10000 | − | 21485109 62500 |
= | 9347 10000 | x | − | 21485109 62500 |
9347 10000 | x | − | 21485109 62500 | = | 28646812 25 |
9347 10000 | x | = | 28646812 25 | + | 21485109 62500 |