( | 4000 | ÷ | 21 | ) | x | + | ( | 6000 | ÷ | 21 | ) | ( | 21 | − | x | ) | = | 472727 100 |
方程左边 = | 4000 | ÷ | 21 | × | x | + | ( | 6000 | ÷ | 21 | ) | ( | 21 | − | x | ) |
= | 4000 21 | x | + | ( | 6000 | ÷ | 21 | ) | ( | 21 | − | x | ) |
= | 4000 21 | x | + | 6000 | ÷ | 21 | × | ( | 21 | − | x | ) |
= | 4000 21 | x | + | 2000 7 | ( | 21 | − | x | ) |
= | 4000 21 | x | + | 2000 7 | × | 21 | − | 2000 7 | x |
= | 4000 21 | x | + | 6000 | − | 2000 7 | x |
= | - | 2000 21 | x | + | 6000 |
- | 2000 21 | x | + | 6000 | = | 472727 100 |
- | 2000 21 | x | = | 472727 100 | − | 6000 |
- | 2000 21 | x | = | - | 127273 100 |
127273 100 | = | 2000 21 | x |
2000 21 | x | = | 127273 100 |
x | = | 127273 100 | ÷ | 2000 21 |
= | 127273 100 | × | 21 2000 |
x | = | 2672733 200000 |
x | = | 13.363665 |