x | = | 11000 | − | 2000 | − | 120 | − | ( | 1 5 | x | + | 424 | ) | + | ( | 21 100 | x | + | 212 | ) | − | 550 |
方程右边 = | 8330 | − | ( | 1 5 | x | + | 424 | ) | + | ( | 21 100 | x | + | 212 | ) |
x | = | 8330 | − | ( | 1 5 | x | + | 424 | ) | + | ( | 21 100 | x | + | 212 | ) |
方程右边 = | 8330 | − | 1 5 | x | − | 424 | + | ( | 21 100 | x | + | 212 | ) |
= | 7906 | − | 1 5 | x | + | ( | 21 100 | x | + | 212 | ) |
= | 7906 | − | 1 5 | x | + | 21 100 | x | + | 212 |
= | 8118 | + | 1 100 | x |
x | = | 8118 | + | 1 100 | x |
x | − | 1 100 | x | = | 8118 |
99 100 | x | = | 8118 |
x | = | 8118 | ÷ | 99 100 |
= | 8118 | × | 100 99 |
= | 82 | × | 100 |
x | = | 8200 |