| 270 | × | 1009 50 | x | + | ( | 330 | ( | x | − | 83 | ) | ) | ÷ | x | × | 308 | = | 446 | × | 330 |
| 方程两边同时乘以: | x |
| 270 | × | 1009 50 | x | x | + | ( | 330 | ( | x | − | 83 | ) | ) | × | 308 | = | 446 | × | 330 | x |
| 270 | × | 1009 50 | x | x | + | 330 | ( | x | − | 83 | ) | × | 308 | = | 446 | × | 330 | x |
27243 5 | x | x | + | 101640 | ( | x | − | 83 | ) | = | 147180 | x |
27243 5 | x | x | + | 101640 | x | − | 101640 | × | 83 | = | 147180 | x |
27243 5 | x | x | + | 101640 | x | − | 8436120 | = | 147180 | x |