( | x | − | 180 | ) | ( | 1 | − | 25 100 | ) | ÷ | 1500 | = | ( | x | − | 180 | − | 4000 | × | 8 100 | ) | ÷ | 1000 |
方程左边 = | x | ( | 1 | − | 25 100 | ) | × | 1 1500 | − | 180 | ( | 1 | − | 25 100 | ) | × | 1 1500 |
= | x | ( | 1 | − | 25 100 | ) | × | 1 1500 | − | 3 25 | ( | 1 | − | 25 100 | ) |
= | x | × | 1 | × | 1 1500 | − | x | × | 25 100 | × | 1 1500 | − | 3 25 | ( | 1 | − | 25 100 | ) |
= | x | × | 1 1500 | − | x | × | 1 6000 | − | 3 25 | ( | 1 | − | 25 100 | ) |
= | 1 2000 | x | − | 3 25 | ( | 1 | − | 25 100 | ) |
= | 1 2000 | x | − | 3 25 | × | 1 | + | 3 25 | × | 25 100 |
= | 1 2000 | x | − | 3 25 | + | 3 100 |
= | 1 2000 | x | − | 9 100 |
1 2000 | x | − | 9 100 | = | ( | x | − | 180 | − | 4000 | × | 8 100 | ) | ÷ | 1000 |
方程右边 = | x | × | 1 1000 | − | 180 | × | 1 1000 | − | 4000 | × | 8 100 | × | 1 1000 |
= | x | × | 1 1000 | − | 9 50 | − | 8 25 |
= | 1 1000 | x | − | 1 2 |
1 2000 | x | − | 9 100 | = | 1 1000 | x | − | 1 2 |
1 2000 | x | − | 1 1000 | x | = | - | 1 2 | + | 9 100 |
- | 1 2000 | x | = | - | 1 2 | + | 9 100 |
- | 1 2000 | x | = | - | 41 100 |
41 100 | = | 1 2000 | x |
1 2000 | x | = | 41 100 |
x | = | 41 100 | ÷ | 1 2000 |
= | 41 100 | × | 2000 |
= | 41 | × | 20 |
x | = | 820 |