| ( | ( | x | × | 13050 | ) | ÷ | ( | x | + | 13050 | ) | ) | − | ( | ( | x | × | 1000 | ) | ÷ | ( | x | + | 1000 | ) | ) | = | 6000 |
| ( | x | × | 13050 | ) | ÷ | ( | x | + | 13050 | ) | − | ( | ( | x | × | 1000 | ) | ÷ | ( | x | + | 1000 | ) | ) | = | 6000 |
| 方程两边同时乘以: | ( | x | + | 13050 | ) |
| ( | x | × | 13050 | ) | − | ( | ( | x | × | 1000 | ) | ÷ | ( | x | + | 1000 | ) | ) | ( | x | + | 13050 | ) | = | 6000 | ( | x | + | 13050 | ) |
| x | × | 13050 | − | ( | ( | x | × | 1000 | ) | ÷ | ( | x | + | 1000 | ) | ) | ( | x | + | 13050 | ) | = | 6000 | ( | x | + | 13050 | ) |
| x | × | 13050 | − | ( | ( | x | × | 1000 | ) | ÷ | ( | x | + | 1000 | ) | ) | ( | x | + | 13050 | ) | = | 6000 | x | + | 6000 | × | 13050 |
| x | × | 13050 | − | ( | ( | x | × | 1000 | ) | ÷ | ( | x | + | 1000 | ) | ) | ( | x | + | 13050 | ) | = | 6000 | x | + | 78300000 |
| 13050 | x | − | ( | x | × | 1000 | ) | ÷ | ( | x | + | 1000 | ) | × | ( | x | + | 13050 | ) | = | 6000 | x | + | 78300000 |
| 方程两边同时乘以: | ( | x | + | 1000 | ) |
| 13050 | x | ( | x | + | 1000 | ) | − | ( | x | × | 1000 | ) | ( | x | + | 13050 | ) | = | 6000 | x | ( | x | + | 1000 | ) | + | 78300000 | ( | x | + | 1000 | ) |
| 13050 | x | x | + | 13050 | x | × | 1000 | − | ( | x | × | 1000 | ) | ( | x | + | 13050 | ) | = | 6000 | x | ( | x | + | 1000 | ) | + | 78300000 | ( | x | + | 1000 | ) |
| 13050 | x | x | + | 13050 | x | × | 1000 | − | ( | x | × | 1000 | ) | ( | x | + | 13050 | ) | = | 6000 | x | x | + | 6000 | x | × | 1000 | + | 78300000 | ( | x | + | 1000 | ) |
| 13050 | x | x | + | 13050000 | x | − | ( | x | × | 1000 | ) | ( | x | + | 13050 | ) | = | 6000 | x | x | + | 6000000 | x | + | 78300000 | ( | x | + | 1000 | ) |
| 13050 | x | x | + | 13050000 | x | − | x | × | 1000 | ( | x | + | 13050 | ) | = | 6000 | x | x | + | 6000000 | x | + | 78300000 | ( | x | + | 1000 | ) |
| 13050 | x | x | + | 13050000 | x | − | x | × | 1000 | ( | x | + | 13050 | ) | = | 6000 | x | x | + | 6000000 | x | + | 78300000 | x | + | 78300000 | × | 1000 |