6477 20 | ÷ | ( | 20 100 | + | x | ) | = | 527 4 | ÷ | x |
| 方程两边同时乘以: | ( | 20 100 | + | x | ) | , | x |
6477 20 | x | = | 527 4 | ( | 20 100 | + | x | ) |
6477 20 | x | = | 527 4 | × | 20 100 | + | 527 4 | x |
6477 20 | x | = | 527 20 | + | 527 4 | x |
6477 20 | x | − | 527 4 | x | = | 527 20 |
1921 10 | x | = | 527 20 |
| x | = | 527 20 | ÷ | 1921 10 |
| = | 527 20 | × | 10 1921 |
| = | 31 2 | × | 1 113 |
| x | = | 31 226 |
| x | = | 0.137168 |