3 | ( | x | + | 1 | ) | ÷ | ( | 2 | x | − | 4 | ) | = | 6 |
方程两边同时乘以: | ( | 2 | x | − | 4 | ) |
3 | ( | x | + | 1 | ) | = | 6 | ( | 2 | x | − | 4 | ) |
3 | x | + | 3 | × | 1 | = | 6 | ( | 2 | x | − | 4 | ) |
3 | x | + | 3 | × | 1 | = | 6 | × | 2 | x | − | 6 | × | 4 |
3 | x | + | 3 | = | 12 | x | − | 24 |
3 | x | − | 12 | x | = | - | 24 | − | 3 |
- | 9 | x | = | - | 24 | − | 3 |
- | 9 | x | = | - | 27 |
27 | = | 9 | x |
9 | x | = | 27 |
x | = | 27 | ÷ | 9 |
= | 27 | × | 1 9 |
= | 3 | × | 1 |
x | = | 3 |