150000 | + | 14 25 | × | 40000 | = | 1 2 | × | 40000 | x |
方程左边 = | 150000 | + | 22400 |
= | 172400 |
172400 | = | 1 2 | × | 40000 | x |
方程右边 = | 20000 | x |
172400 | = | 20000 | x |
- | 20000 | x | = | - | 172400 |
172400 | = | 20000 | x |
20000 | x | = | 172400 |
x | = | 172400 | ÷ | 20000 |
= | 172400 | × | 1 20000 |
= | 431 | × | 1 50 |
x | = | 431 50 |
x | = | 8.62 |