| ( | 1 10 | + | x | ) | x | ( | 4157 500 | × | 823 | ) | = | ( | 7 10 | − | x | ) | × | 200 | × | 136 5 |
| 方程左边 = | 1 10 | x | ( | 4157 500 | × | 823 | ) | + | x | x | ( | 4157 500 | × | 823 | ) |
| = | 1 10 | x | × | 4157 500 | × | 823 | + | x | x | ( | 4157 500 | × | 823 | ) |
| = | 3421211 5000 | x | + | x | x | ( | 4157 500 | × | 823 | ) |
| = | 3421211 5000 | x | + | x | x | × | 4157 500 | × | 823 |
| = | 3421211 5000 | x | + | x | x | × | 3421211 500 |
3421211 5000 | x | + | x | x | × | 3421211 500 | = | ( | 7 10 | − | x | ) | × | 200 | × | 136 5 |
| 方程右边 = | ( | 7 10 | − | x | ) | × | 5440 |
3421211 5000 | x | + | x | x | × | 3421211 500 | = | ( | 7 10 | − | x | ) | × | 5440 |
| 方程右边 = | 7 10 | × | 5440 | − | x | × | 5440 |
| = | 3808 | − | x | × | 5440 |
3421211 5000 | x | + | x | x | × | 3421211 500 | = | 3808 | − | 5440 | x |