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