| ( | ( | 4550 | − | 6500 | ) | ÷ | 6500 | ) | ÷ | ( | ( | x | − | 2000 | ) | ÷ | 2000 | ) | = | - | 2 |
| 方程两边同时乘以: | ( | ( | x | − | 2000 | ) | ÷ | 2000 | ) |
| ( | ( | 4550 | − | 6500 | ) | ÷ | 6500 | ) | = | - | 2 | ( | ( | x | − | 2000 | ) | ÷ | 2000 | ) |
| ( | 4550 | − | 6500 | ) | ÷ | 6500 | = | - | 2 | ( | ( | x | − | 2000 | ) | ÷ | 2000 | ) |
| ( | 4550 | − | 6500 | ) | ÷ | 6500 | = | - | 2 | ( | x | − | 2000 | ) | ÷ | 2000 |
| ( | 4550 | − | 6500 | ) | × | 1 6500 | = | - | 1 1000 | ( | x | − | 2000 | ) |
| 4550 | × | 1 6500 | − | 6500 | × | 1 6500 | = | - | 1 1000 | ( | x | − | 2000 | ) |
| 4550 | × | 1 6500 | − | 6500 | × | 1 6500 | = | - | 1 1000 | x | + | 1 1000 | × | 2000 |
7 10 | − | 1 | = | - | 1 1000 | x | + | 2 |
| - | 3 10 | = | - | 1 1000 | x | + | 2 |
1 1000 | x | = | 2 | + | 3 10 |
1 1000 | x | = | 23 10 |
| x | = | 23 10 | ÷ | 1 1000 |
| = | 23 10 | × | 1000 |
| = | 23 | × | 100 |
| x | = | 2300 |