5 4 | ÷ | ( | 5 | − | x | ) | + | 5 8 | ÷ | ( | 5 2 | − | x | ) | + | 1 4 | ÷ | ( | 1 | − | x | ) | + | 1 20 | ÷ | ( | 1 5 | − | x | ) | = | 0 |
| 方程两边同时乘以: | ( | 5 | − | x | ) |
5 4 | + | 5 8 | ÷ | ( | 5 2 | − | x | ) | × | ( | 5 | − | x | ) | + | 1 4 | ÷ | ( | 1 | − | x | ) | × | ( | 5 | − | x | ) | + | 1 20 | ÷ | ( | 1 5 | − | x | ) | × | ( | 5 | − | x | ) | = | 0 |
5 4 | + | 5 8 | ÷ | ( | 5 2 | − | x | ) | × | 5 | − | 5 8 | ÷ | ( | 5 2 | − | x | ) | × | x | + | 1 4 | ÷ | ( | 1 | − | x | ) | × | ( | 5 | − | x | ) | + | 1 20 | ÷ | ( | 1 5 | − | x | ) | = | 0 |
5 4 | + | 25 8 | ÷ | ( | 5 2 | − | x | ) | − | 5 8 | ÷ | ( | 5 2 | − | x | ) | × | x | + | 1 4 | ÷ | ( | 1 | − | x | ) | × | ( | 5 | − | x | ) | + | 1 20 | ÷ | ( | 1 5 | − | x | ) | × | ( | 5 | − | x | ) | = | 0 |
| 方程两边同时乘以: | ( | 5 2 | − | x | ) |
5 4 | ( | 5 2 | − | x | ) | + | 25 8 | − | 5 8 | x | + | 1 4 | ÷ | ( | 1 | − | x | ) | × | ( | 5 | − | x | ) | ( | 5 2 | − | x | ) | + | 1 20 | ÷ | ( | 1 5 | − | x | ) | × | ( | 5 | − | x | ) | = | 0 |
5 4 | × | 5 2 | − | 5 4 | x | + | 25 8 | − | 5 8 | x | + | 1 4 | ÷ | ( | 1 | − | x | ) | × | ( | 5 | − | x | ) | ( | 5 2 | − | x | ) | + | 1 20 | = | 0 |
25 8 | − | 5 4 | x | + | 25 8 | − | 5 8 | x | + | 1 4 | ÷ | ( | 1 | − | x | ) | × | ( | 5 | − | x | ) | ( | 5 2 | − | x | ) | + | 1 20 | ÷ | ( | 1 5 | − | x | ) | = | 0 |
25 4 | − | 15 8 | x | + | 1 4 | ÷ | ( | 1 | − | x | ) | × | ( | 5 | − | x | ) | ( | 5 2 | − | x | ) | + | 1 20 | ÷ | ( | 1 5 | − | x | ) | × | ( | 5 | − | x | ) | ( | 5 2 | − | x | ) | = | 0 |
| 方程两边同时乘以: | ( | 1 | − | x | ) |
25 4 | ( | 1 | − | x | ) | − | 15 8 | x | ( | 1 | − | x | ) | + | 1 4 | ( | 5 | − | x | ) | ( | 5 2 | − | x | ) | + | 1 20 | ÷ | ( | 1 5 | − | x | ) | × | ( | 5 | − | x | ) | ( | 5 2 | − | x | ) | = | 0 |
25 4 | × | 1 | − | 25 4 | x | − | 15 8 | x | ( | 1 | − | x | ) | + | 1 4 | ( | 5 | − | x | ) | ( | 5 2 | − | x | ) | + | 1 20 | ÷ | ( | 1 5 | − | x | ) | = | 0 |
25 4 | − | 25 4 | x | − | 15 8 | x | ( | 1 | − | x | ) | + | 1 4 | ( | 5 | − | x | ) | ( | 5 2 | − | x | ) | + | 1 20 | ÷ | ( | 1 5 | − | x | ) | × | ( | 5 | − | x | ) | = | 0 |
| 方程两边同时乘以: | ( | 1 5 | − | x | ) |
25 4 | ( | 1 5 | − | x | ) | − | 25 4 | x | ( | 1 5 | − | x | ) | − | 15 8 | x | ( | 1 | − | x | ) | ( | 1 5 | − | x | ) | + | 1 4 | ( | 5 | − | x | ) | ( | 5 2 | − | x | ) | = | 0 |
25 4 | × | 1 5 | − | 25 4 | x | − | 25 4 | x | ( | 1 5 | − | x | ) | − | 15 8 | x | ( | 1 | − | x | ) | ( | 1 5 | − | x | ) | + | 1 4 | = | 0 |
5 4 | − | 25 4 | x | − | 25 4 | x | ( | 1 5 | − | x | ) | − | 15 8 | x | ( | 1 | − | x | ) | ( | 1 5 | − | x | ) | + | 1 4 | ( | 5 | − | x | ) | = | 0 |
5 4 | − | 25 4 | x | − | 25 4 | x | × | 1 5 | + | 25 4 | x | x | − | 15 8 | x | ( | 1 | − | x | ) | = | 0 |
5 4 | − | 25 4 | x | − | 5 4 | x | + | 25 4 | x | x | − | 15 8 | x | ( | 1 | − | x | ) | ( | 1 5 | − | x | ) | = | 0 |
5 4 | − | 15 2 | x | + | 25 4 | x | x | − | 15 8 | x | ( | 1 | − | x | ) | ( | 1 5 | − | x | ) | + | 1 4 | ( | 5 | − | x | ) | = | 0 |
5 4 | − | 15 2 | x | + | 25 4 | x | x | − | 15 8 | x | × | 1 | ( | 1 5 | − | x | ) | + | 15 8 | x | = | 0 |
5 4 | − | 15 2 | x | + | 25 4 | x | x | − | 15 8 | x | ( | 1 5 | − | x | ) | + | 15 8 | x | x | = | 0 |
5 4 | − | 15 2 | x | + | 25 4 | x | x | − | 15 8 | x | × | 1 5 | + | 15 8 | x | x | = | 0 |
5 4 | − | 15 2 | x | + | 25 4 | x | x | − | 3 8 | x | + | 15 8 | x | x | + | 15 8 | = | 0 |
5 4 | − | 63 8 | x | + | 25 4 | x | x | + | 15 8 | x | x | + | 15 8 | x | x | = | 0 |
5 4 | − | 63 8 | x | + | 25 4 | x | x | + | 15 8 | x | x | + | 15 8 | x | x | = | 0 |