1500 | x | − | 270000 | = | ( | 1800 | x | − | 324000 | ) | − | 7200 |
方程右边 = | 1800 | x | − | 324000 | − | 7200 |
= | 1800 | x | − | 331200 |
1500 | x | − | 270000 | = | 1800 | x | − | 331200 |
1500 | x | − | 1800 | x | = | - | 331200 | + | 270000 |
- | 300 | x | = | - | 331200 | + | 270000 |
- | 300 | x | = | - | 61200 |
61200 | = | 300 | x |
300 | x | = | 61200 |
x | = | 61200 | ÷ | 300 |
= | 61200 | × | 1 300 |
= | 204 | × | 1 |
x | = | 204 |