| 500 | ÷ | x | × | 1 | + | ( | x | × | 2 | x | × | 3 | ) | ÷ | ( | x | × | 2 | + | x | × | 1 | ) | × | x | × | 1 | ÷ | x | × | 2 | = | 0 |
| 方程两边同时乘以: | x |
| 500 | × | 1 | + | ( | 1 | × | 2 | x | × | 3 | ) | ÷ | ( | x | × | 2 | + | x | × | 1 | ) | × | x | × | 1 | ÷ | 1 | × | 2 | x | = | 0 |
| 500 | × | 1 | + | 1 | × | 2 | x | × | 3 | ÷ | ( | x | × | 2 | + | x | × | 1 | ) | × | x | × | 1 | ÷ | 1 | × | 2 | x | = | 0 |
| 500 | + | 12 | x | ÷ | ( | x | × | 2 | + | x | × | 1 | ) | × | x | x | = | 0 |
| 方程两边同时乘以: | ( | x | × | 2 | + | x | × | 1 | ) |
| 500 | ( | x | × | 2 | + | x | × | 1 | ) | + | 12 | x | x | x | = | 0 |
| 500 | x | × | 2 | + | 500 | x | × | 1 | + | 12 | x | x | x | = | 0 |
| 1000 | x | + | 500 | x | + | 12 | x | x | x | = | 0 |
| 1500 | x | + | 12 | x | x | x | = | 0 |