7 4 | ÷ | x | = | 5 2 | ÷ | ( | x | + | 5 2 | ) |
| 方程两边同时乘以: | x | , | ( | x | + | 5 2 | ) |
7 4 | ( | x | + | 5 2 | ) | = | 5 2 | x |
7 4 | x | + | 7 4 | × | 5 2 | = | 5 2 | x |
7 4 | x | + | 35 8 | = | 5 2 | x |
7 4 | x | − | 5 2 | x | = | - | 35 8 |
| - | 3 4 | x | = | - | 35 8 |
35 8 | = | 3 4 | x |
3 4 | x | = | 35 8 |
| x | = | 35 8 | ÷ | 3 4 |
| = | 35 8 | × | 4 3 |
| = | 35 2 | × | 1 3 |
| x | = | 35 6 |
| x | = | 5.833333 |