1 500 | × | 3 4 | ÷ | ( | 1 | + | x | ) | + | 1 200 | × | 3 4 | ÷ | ( | 1 | + | x | ) | ÷ | ( | 1 | + | x | ) | + | 1 100 | × | 3 4 | ÷ | ( | 1 | + | x | ) | ÷ | ( | 1 | + | x | ) | ÷ | ( | 1 | + | x | ) | = | 1 |
| 方程两边同时乘以: | ( | 1 | + | x | ) |
1 500 | × | 3 4 | + | 1 200 | × | 3 4 | ÷ | ( | 1 | + | x | ) | + | 1 100 | × | 3 4 | ÷ | ( | 1 | + | x | ) | ÷ | ( | 1 | + | x | ) | = | 1 | ( | 1 | + | x | ) |
1 500 | × | 3 4 | + | 1 200 | × | 3 4 | ÷ | ( | 1 | + | x | ) | + | 1 100 | × | 3 4 | ÷ | ( | 1 | + | x | ) | ÷ | ( | 1 | + | x | ) | = | 1 | × | 1 | + | 1 | x |
3 2000 | + | 3 800 | ÷ | ( | 1 | + | x | ) | + | 3 400 | ÷ | ( | 1 | + | x | ) | ÷ | ( | 1 | + | x | ) | = | 1 | + | 1 | x |
| 方程两边同时乘以: | ( | 1 | + | x | ) |
3 2000 | ( | 1 | + | x | ) | + | 3 800 | + | 3 400 | ÷ | ( | 1 | + | x | ) | = | 1 | ( | 1 | + | x | ) | + | 1 | x | ( | 1 | + | x | ) |
3 2000 | × | 1 | + | 3 2000 | x | + | 3 800 | + | 3 400 | ÷ | ( | 1 | + | x | ) | = | 1 | ( | 1 | + | x | ) | + | 1 | x | ( | 1 | + | x | ) |
3 2000 | × | 1 | + | 3 2000 | x | + | 3 800 | + | 3 400 | ÷ | ( | 1 | + | x | ) | = | 1 | × | 1 | + | 1 | x | + | 1 | x | ( | 1 | + | x | ) |
3 2000 | + | 3 2000 | x | + | 3 800 | + | 3 400 | ÷ | ( | 1 | + | x | ) | = | 1 | + | 1 | x | + | 1 | x | ( | 1 | + | x | ) |
21 4000 | + | 3 2000 | x | + | 3 400 | ÷ | ( | 1 | + | x | ) | = | 1 | + | 1 | x | + | 1 | x | ( | 1 | + | x | ) |
| 方程两边同时乘以: | ( | 1 | + | x | ) |
21 4000 | ( | 1 | + | x | ) | + | 3 2000 | x | ( | 1 | + | x | ) | + | 3 400 | = | 1 | ( | 1 | + | x | ) | + | 1 | x | ( | 1 | + | x | ) | + | 1 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
21 4000 | × | 1 | + | 21 4000 | x | + | 3 2000 | x | ( | 1 | + | x | ) | + | 3 400 | = | 1 | ( | 1 | + | x | ) | + | 1 | x | ( | 1 | + | x | ) | + | 1 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
21 4000 | × | 1 | + | 21 4000 | x | + | 3 2000 | x | ( | 1 | + | x | ) | + | 3 400 | = | 1 | × | 1 | + | 1 | x | + | 1 | x | ( | 1 | + | x | ) | + | 1 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
21 4000 | + | 21 4000 | x | + | 3 2000 | x | ( | 1 | + | x | ) | + | 3 400 | = | 1 | + | 1 | x | + | 1 | x | ( | 1 | + | x | ) | + | 1 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
51 4000 | + | 21 4000 | x | + | 3 2000 | x | ( | 1 | + | x | ) | = | 1 | + | 1 | x | + | 1 | x | ( | 1 | + | x | ) | + | 1 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
51 4000 | + | 21 4000 | x | + | 3 2000 | x | × | 1 | + | 3 2000 | x | x | = | 1 | + | 1 | x | + | 1 | x | ( | 1 | + | x | ) | + | 1 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
51 4000 | + | 21 4000 | x | + | 3 2000 | x | × | 1 | + | 3 2000 | x | x | = | 1 | + | 1 | x | + | 1 | x | × | 1 | + | 1 | x | x | + | 1 | x | ( | 1 | + | x | ) |
51 4000 | + | 21 4000 | x | + | 3 2000 | x | + | 3 2000 | x | x | = | 1 | + | 1 | x | + | 1 | x | + | 1 | x | x | + | 1 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
51 4000 | + | 27 4000 | x | + | 3 2000 | x | x | = | 1 | + | 2 | x | + | 1 | x | x | + | 1 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
51 4000 | + | 27 4000 | x | + | 3 2000 | x | x | = | 1 | + | 2 | x | + | 1 | x | x | + | 1 | x | × | 1 | ( | 1 | + | x | ) | + | 1 | x |
51 4000 | + | 27 4000 | x | + | 3 2000 | x | x | = | 1 | + | 2 | x | + | 1 | x | x | + | 1 | x | ( | 1 | + | x | ) | + | 1 | x | x |
51 4000 | + | 27 4000 | x | + | 3 2000 | x | x | = | 1 | + | 2 | x | + | 1 | x | x | + | 1 | x | × | 1 | + | 1 | x | x |
51 4000 | + | 27 4000 | x | + | 3 2000 | x | x | = | 1 | + | 2 | x | + | 1 | x | x | + | 1 | x | + | 1 | x | x | + | 1 |
51 4000 | + | 27 4000 | x | + | 3 2000 | x | x | = | 1 | + | 3 | x | + | 1 | x | x | + | 1 | x | x | + | 1 | x | x |
51 4000 | + | 27 4000 | x | + | 3 2000 | x | x | = | 1 | + | 3 | x | + | 1 | x | x | + | 1 | x | x | + | 1 | x | x |