7 10 | x | ( | 7 10 | x | + | 1 10 | ) | × | 4157 500 | × | 523 | = | 136 5 | × | 7 10 | ( | 1 | − | x | ) | × | 200 |
| 方程左边 = | 15218777 5000 | x | ( | 7 10 | x | + | 1 10 | ) |
15218777 5000 | x | ( | 7 10 | x | + | 1 10 | ) | = | 136 5 | × | 7 10 | ( | 1 | − | x | ) | × | 200 |
| 方程左边 = | 15218777 5000 | x | × | 7 10 | x | + | 15218777 5000 | x | × | 1 10 |
| = | 106531439 50000 | x | x | + | 15218777 50000 | x |
106531439 50000 | x | x | + | 15218777 50000 | x | = | 136 5 | × | 7 10 | ( | 1 | − | x | ) | × | 200 |
| 方程右边 = | 3808 | ( | 1 | − | x | ) |
106531439 50000 | x | x | + | 15218777 50000 | x | = | 3808 | ( | 1 | − | x | ) |
| 方程右边 = | 3808 | × | 1 | − | 3808 | x |
| = | 3808 | − | 3808 | x |
106531439 50000 | x | x | + | 15218777 50000 | x | = | 3808 | − | 3808 | x |