99 50 | x | + | 18000 | = | 2 | ( | x | + | 15000 | ) |
方程右边 = | 2 | x | + | 2 | × | 15000 |
= | 2 | x | + | 30000 |
99 50 | x | + | 18000 | = | 2 | x | + | 30000 |
99 50 | x | − | 2 | x | = | 30000 | − | 18000 |
- | 1 50 | x | = | 30000 | − | 18000 |
- | 1 50 | x | = | 12000 |
- | 12000 | = | 1 50 | x |
1 50 | x | = | - | 12000 |
x | = | - | 12000 | ÷ | 1 50 |
= | - | 12000 | × | 50 |
x | = | - | 600000 |