| 10000 | ( | 1 4 | x | + | 1 | ) | = | x | ( | x | + | 1 | ) | ( | 1 100 | x | + | 1 | ) | ( | 1 400 | x | + | 1 | ) |
| 方程左边 = | 10000 | × | 1 4 | x | + | 10000 | × | 1 |
| = | 2500 | x | + | 10000 |
| 2500 | x | + | 10000 | = | x | ( | x | + | 1 | ) | ( | 1 100 | x | + | 1 | ) | ( | 1 400 | x | + | 1 | ) |
| 方程右边 = | x | x | ( | 1 100 | x | + | 1 | ) | ( | 1 400 | x | + | 1 | ) | + | x | × | 1 | ( | 1 100 | x | + | 1 | ) | ( | 1 400 | x | + | 1 | ) |
| = | x | x | × | 1 100 | x | ( | 1 400 | x | + | 1 | ) | + | x | x | × | 1 | ( | 1 400 | x | + | 1 | ) | + | x | × | 1 | ( | 1 100 | x | + | 1 | ) |
| = | x | x | × | 1 100 | x | × | 1 400 | x | + | x | x | × | 1 100 | x | × | 1 | + | x |
| = | x | x | × | 1 40000 | x | x | + | x | x | × | 1 100 | x | + | x | x | × | 1 |
| = | x | x | × | 1 40000 | x | x | + | x | x | × | 1 100 | x | + | x | x | × | 1 |
| = | x | x | × | 1 40000 | x | x | + | x | x | × | 1 100 | x | + | x | x | × | 1 400 |
| = | x | x | × | 1 40000 | x | x | + | x | x | × | 1 100 | x | + | x | x | × | 1 400 |
| = | x | x | × | 1 40000 | x | x | + | x | x | × | 1 100 | x | + | x | x | × | 1 400 |
| = | x | x | × | 1 40000 | x | x | + | x | x | × | 1 100 | x | + | x | x | × | 1 400 |
| = | x | x | × | 1 40000 | x | x | + | x | x | × | 1 100 | x | + | x | x | × | 1 400 |
| = | x | x | × | 1 40000 | x | x | + | x | x | × | 1 100 | x | + | x | x | × | 1 400 |
| = | x | x | × | 1 40000 | x | x | + | x | x | × | 1 100 | x | + | x | x | × | 1 400 |
| 2500 | x | + | 10000 | = | x | x | × | 1 40000 | x | x | + | x | x | × | 1 100 | x | + | x | x | × | 1 400 |