| 60000000 | = | x | × | 3 50 | ÷ | ( | 1 100000 | ( | 2 | + | x | ) | ÷ | x | ) |
| 方程两边同时乘以: | ( | 1 100000 | ( | 2 | + | x | ) | ÷ | x | ) |
| 60000000 | ( | 1 100000 | ( | 2 | + | x | ) | ÷ | x | ) | = | x | × | 3 50 |
| 60000000 | × | 1 100000 | ( | 2 | + | x | ) | ÷ | x | = | x | × | 3 50 |
| 600 | ( | 2 | + | x | ) | ÷ | x | = | x | × | 3 50 |
| 方程两边同时乘以: | x |
| 600 | ( | 2 | + | x | ) | = | 3 50 | x | x |
| 600 | × | 2 | + | 600 | x | = | 3 50 | x | x |
| 1200 | + | 600 | x | = | 3 50 | x | x |