( | 1 | ÷ | X | ) | + | 1 | ÷ | ( | X | + | 15 | ) | = | 1 | ÷ | 4 |
方程两边同时乘以: | ( | X | + | 15 | ) |
( | 1 | ÷ | X | ) | ( | X | + | 15 | ) | + | 1 | = | 1 | ÷ | 4 | × | ( | X | + | 15 | ) |
1 | ÷ | X | × | ( | X | + | 15 | ) | + | 1 | = | 1 | ÷ | 4 | × | ( | X | + | 15 | ) |
1 | ÷ | X | × | ( | X | + | 15 | ) | + | 1 | = | 1 | ÷ | 4 | × | X | + | 1 | ÷ | 4 | × | 15 |
1 | ÷ | X | × | ( | X | + | 15 | ) | + | 1 | = | 1 4 | X | + | 15 4 |
方程两边同时乘以: | X |
1 | ( | X | + | 15 | ) | + | 1 | X | = | 1 4 | X | X | + | 15 4 | X |
1 | X | + | 1 | × | 15 | + | 1 | X | = | 1 4 | X | X | + | 15 4 | X |
1 | X | + | 15 | + | 1 | X | = | 1 4 | X | X | + | 15 4 | X |
2 | X | + | 15 | = | 1 4 | X | X | + | 15 4 | X |