1 | ÷ | d | + | 1 | ÷ | ( | d | + | 3 | ) | + | ( | 2 | d | + | 2 | ) | ÷ | ( | d | d | + | 2 | d | + | 2 | ) | = | 1 | ÷ | ( | d | + | 2 | ) |
方程两边同时乘以: | d | , | ( | d | + | 2 | ) |
1 | ( | d | + | 2 | ) | + | 1 | ÷ | ( | d | + | 3 | ) | × | d | ( | d | + | 2 | ) | + | ( | 2 | d | + | 2 | ) | ÷ | ( | d | d | + | 2 | d | + | 2 | ) | × | d | ( | d | + | 2 | ) | = | 1 | d |
1 | d | + | 1 | × | 2 | + | 1 | ÷ | ( | d | + | 3 | ) | × | d | ( | d | + | 2 | ) | + | ( | 2 | d | + | 2 | ) | ÷ | ( | d | d | + | 2 | d | + | 2 | ) | × | d | ( | d | + | 2 | ) | = | 1 | d |
1 | d | + | 2 | + | 1 | ÷ | ( | d | + | 3 | ) | × | d | ( | d | + | 2 | ) | + | ( | 2 | d | + | 2 | ) | ÷ | ( | d | d | + | 2 | d | + | 2 | ) | × | d | ( | d | + | 2 | ) | = | 1 | d |
方程两边同时乘以: | ( | d | + | 3 | ) |
1 | d | ( | d | + | 3 | ) | + | 2 | ( | d | + | 3 | ) | + | 1 | d | ( | d | + | 2 | ) | + | ( | 2 | d | + | 2 | ) | ÷ | ( | d | d | + | 2 | d | + | 2 | ) | × | d | ( | d | + | 2 | ) | = | 1 | d | ( | d | + | 3 | ) |
1 | d | d | + | 1 | d | × | 3 | + | 2 | ( | d | + | 3 | ) | + | 1 | d | ( | d | + | 2 | ) | + | ( | 2 | d | + | 2 | ) | = | 1 | d | ( | d | + | 3 | ) |
1 | d | d | + | 1 | d | × | 3 | + | 2 | ( | d | + | 3 | ) | + | 1 | d | ( | d | + | 2 | ) | + | ( | 2 | d | + | 2 | ) | = | 1 | d | d | + | 1 | d | × | 3 |
1 | d | d | + | 3 | d | + | 2 | ( | d | + | 3 | ) | + | 1 | d | ( | d | + | 2 | ) | + | ( | 2 | d | + | 2 | ) | ÷ | ( | d | d | + | 2 | d | + | 2 | ) | = | 1 | d | d | + | 3 | d |
方程两边同时乘以: | ( | d | d | + | 2 | d | + | 2 | ) |
1 | d | d | ( | d | d | + | 2 | d | + | 2 | ) | + | 3 | d | ( | d | d | + | 2 | d | + | 2 | ) | + | 2 | ( | d | + | 3 | ) | ( | d | d | + | 2 | d | + | 2 | ) | + | 1 | d | = | 1 | d | d | ( | d | d | + | 2 | d | + | 2 | ) | + | 3 | d | ( | d | d | + | 2 | d | + | 2 | ) |
1 | d | d | d | d | + | 1 | d | d | × | 2 | d | + | 1 | d | = | 1 | d | d | ( | d | d | + | 2 | d | + | 2 | ) | + | 3 | d | ( | d | d | + | 2 | d | + | 2 | ) |
1 | d | d | d | d | + | 1 | d | d | × | 2 | d | + | 1 | d | = | 1 | d | d | d | d | + | 1 | d | d | × | 2 | d | + | 1 | d |
1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d | = | 1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d |
1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d | = | 1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d |
1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d | = | 1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d |
1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d | = | 1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d |
1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d | = | 1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d |
1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d | = | 1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d |
1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d | = | 1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d |
1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d | = | 1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d |
1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d | = | 1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d |
1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d | = | 1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d |
1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d | = | 1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d |
1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d | = | 1 | d | d | d | d | + | 2 | d | d | d | + | 2 | d | d |