2 | ÷ | 9 | × | x | + | 2000 | = | 5 | ÷ | 7 | × | ( | 7 | ÷ | 9 | × | x | − | 2000 | ) |
方程左边 = | 2 9 | x | + | 2000 |
2 9 | x | + | 2000 | = | 5 | ÷ | 7 | × | ( | 7 | ÷ | 9 | × | x | − | 2000 | ) |
方程右边 = | 5 7 | ( | 7 | ÷ | 9 | × | x | − | 2000 | ) |
2 9 | x | + | 2000 | = | 5 7 | ( | 7 | ÷ | 9 | × | x | − | 2000 | ) |
方程右边 = | 5 7 | × | 7 | ÷ | 9 | × | x | − | 5 7 | × | 2000 |
= | 5 9 | x | − | 10000 7 |
2 9 | x | + | 2000 | = | 5 9 | x | − | 10000 7 |
2 9 | x | − | 5 9 | x | = | - | 10000 7 | − | 2000 |
- | 1 3 | x | = | - | 10000 7 | − | 2000 |
- | 1 3 | x | = | - | 24000 7 |
24000 7 | = | 1 3 | x |
1 3 | x | = | 24000 7 |
x | = | 24000 7 | ÷ | 1 3 |
= | 24000 7 | × | 3 |
x | = | 72000 7 |
x | = | 10285.714286 |