1 | ÷ | ( | d | + | 1 | ) | + | 1 | ÷ | ( | d | + | 3 | ) | = | 1 | ÷ | d |
方程两边同时乘以: | ( | d | + | 1 | ) | , | d |
1 | d | + | 1 | ÷ | ( | d | + | 3 | ) | × | ( | d | + | 1 | ) | d | = | 1 | ( | d | + | 1 | ) |
1 | d | + | 1 | ÷ | ( | d | + | 3 | ) | × | d | d | + | 1 | ÷ | ( | d | + | 3 | ) | × | 1 | d | = | 1 | ( | d | + | 1 | ) |
1 | d | + | 1 | ÷ | ( | d | + | 3 | ) | × | d | d | + | 1 | ÷ | ( | d | + | 3 | ) | × | 1 | d | = | 1 | d | + | 1 | × | 1 |
1 | d | + | 1 | ÷ | ( | d | + | 3 | ) | × | d | d | + | 1 | ÷ | ( | d | + | 3 | ) | × | d | = | 1 | d | + | 1 |
方程两边同时乘以: | ( | d | + | 3 | ) |
1 | d | ( | d | + | 3 | ) | + | 1 | d | d | + | 1 | d | = | 1 | d | ( | d | + | 3 | ) | + | 1 | ( | d | + | 3 | ) |
1 | d | d | + | 1 | d | × | 3 | + | 1 | d | d | + | 1 | d | = | 1 | d | ( | d | + | 3 | ) | + | 1 | ( | d | + | 3 | ) |
1 | d | d | + | 1 | d | × | 3 | + | 1 | d | d | + | 1 | d | = | 1 | d | d | + | 1 | d | × | 3 | + | 1 | ( | d | + | 3 | ) |
1 | d | d | + | 3 | d | + | 1 | d | d | + | 1 | d | = | 1 | d | d | + | 3 | d | + | 1 | ( | d | + | 3 | ) |
1 | d | d | + | 4 | d | + | 1 | d | d | = | 1 | d | d | + | 3 | d | + | 1 | ( | d | + | 3 | ) |
1 | d | d | + | 4 | d | + | 1 | d | d | = | 1 | d | d | + | 3 | d | + | 1 | d | + | 1 | × | 3 |
1 | d | d | + | 4 | d | + | 1 | d | d | = | 1 | d | d | + | 3 | d | + | 1 | d | + | 3 |
1 | d | d | + | 4 | d | + | 1 | d | d | = | 1 | d | d | + | 4 | d | + | 3 |