| ( | 385 2 | + | 11907 125 | x | ) | ÷ | ( | 7 2 | + | 378 25 | x | ) | = | 25 |
| 方程两边同时乘以: | ( | 7 2 | + | 378 25 | x | ) |
| ( | 385 2 | + | 11907 125 | x | ) | = | 25 | ( | 7 2 | + | 378 25 | x | ) |
385 2 | + | 11907 125 | x | = | 25 | ( | 7 2 | + | 378 25 | x | ) |
385 2 | + | 11907 125 | x | = | 25 | × | 7 2 | + | 25 | × | 378 25 | x |
385 2 | + | 11907 125 | x | = | 175 2 | + | 378 | x |
11907 125 | x | − | 378 | x | = | 175 2 | − | 385 2 |
| - | 35343 125 | x | = | 175 2 | − | 385 2 |
| - | 35343 125 | x | = | - | 105 |
| 105 | = | 35343 125 | x |
35343 125 | x | = | 105 |
| x | = | 105 | ÷ | 35343 125 |
| = | 105 | × | 125 35343 |
| = | 5 | × | 125 1683 |
| x | = | 625 1683 |
| x | = | 0.371361 |