( | 2 | × | 20000 | + | 43 25 | x | ) | ÷ | ( | 20000 | + | x | ) | = | 9 5 |
方程两边同时乘以: | ( | 20000 | + | x | ) |
( | 2 | × | 20000 | + | 43 25 | x | ) | = | 9 5 | ( | 20000 | + | x | ) |
2 | × | 20000 | + | 43 25 | x | = | 9 5 | ( | 20000 | + | x | ) |
2 | × | 20000 | + | 43 25 | x | = | 9 5 | × | 20000 | + | 9 5 | x |
40000 | + | 43 25 | x | = | 36000 | + | 9 5 | x |
43 25 | x | − | 9 5 | x | = | 36000 | − | 40000 |
- | 2 25 | x | = | 36000 | − | 40000 |
- | 2 25 | x | = | - | 4000 |
4000 | = | 2 25 | x |
2 25 | x | = | 4000 |
x | = | 4000 | ÷ | 2 25 |
= | 4000 | × | 25 2 |
= | 2000 | × | 25 |
x | = | 50000 |