12 | ÷ | x | − | 12 | ÷ | ( | x | + | 2 | ) | = | 3 |
方程两边同时乘以: | x |
12 | − | 12 | ÷ | ( | x | + | 2 | ) | × | x | = | 3 | x |
方程两边同时乘以: | ( | x | + | 2 | ) |
12 | ( | x | + | 2 | ) | − | 12 | x | = | 3 | x | ( | x | + | 2 | ) |
12 | x | + | 12 | × | 2 | − | 12 | x | = | 3 | x | ( | x | + | 2 | ) |
12 | x | + | 12 | × | 2 | − | 12 | x | = | 3 | x | x | + | 3 | x | × | 2 |
12 | x | + | 24 | − | 12 | x | = | 3 | x | x | + | 6 | x |
0 | x | + | 24 | = | 3 | x | x | + | 6 | x |