3 2 | = | 1 | + | ( | x | ÷ | ( | 300 | − | x | ) | ) |
3 2 | = | 1 | + | x | ÷ | ( | 300 | − | x | ) |
| 方程两边同时乘以: | ( | 300 | − | x | ) |
3 2 | ( | 300 | − | x | ) | = | 1 | ( | 300 | − | x | ) | + | x |
3 2 | × | 300 | − | 3 2 | x | = | 1 | ( | 300 | − | x | ) | + | x |
3 2 | × | 300 | − | 3 2 | x | = | 1 | × | 300 | − | 1 | x | + | x |
| 450 | − | 3 2 | x | = | 300 | − | 1 | x | + | x |
| 450 | − | 3 2 | x | = | 300 | − | 0 | x |
| - | 3 2 | x | = | 300 | − | 450 |
| - | 3 2 | x | = | - | 150 |
| 150 | = | 3 2 | x |
3 2 | x | = | 150 |
| x | = | 150 | ÷ | 3 2 |
| = | 150 | × | 2 3 |
| = | 50 | × | 2 |
| x | = | 100 |