1 | ÷ | ( | 1 | ÷ | X | + | 1 | ÷ | X | + | 40 | ) | = | 1 25 |
方程两边同时乘以: | ( | 1 | ÷ | X | + | 1 | ÷ | X | + | 40 | ) |
1 | = | 1 25 | ( | 1 | ÷ | X | + | 1 | ÷ | X | + | 40 | ) |
1 | = | 1 25 | × | 1 | ÷ | X | + | 1 25 | × | 1 | ÷ | X | + | 1 25 | × | 40 |
1 | = | 1 25 | ÷ | X | + | 1 25 | ÷ | X | + | 8 5 |
方程两边同时乘以: | X |
1 | X | = | 1 25 | + | 1 25 | ÷ | X | × | X | + | 8 5 | X |
1 | X | − | 8 5 | X | = | 1 25 | + | 1 25 | ÷ | 1 | × | 1 |
1 | X | − | 8 5 | X | = | 1 25 | + | 1 25 |
- | 3 5 | X | = | 1 25 | + | 1 25 |
- | 3 5 | X | = | 2 25 |
- | 2 25 | = | 3 5 | X |
3 5 | X | = | - | 2 25 |
X | = | - | 2 25 | ÷ | 3 5 |
= | - | 2 25 | × | 5 3 |
= | - | 2 5 | × | 1 3 |
X | = | - | 2 15 |
X | = | - 0.133333 |