- | 161879681 250 | = | - | 58980143 100 | + | x | − | 4000 | − | ( | - | 58980143 100 | + | x | − | 4000 | ) | × | 9 100 |
方程右边 = | - | 59380143 100 | + | x | − | ( | - | 58980143 100 | + | x | − | 4000 | ) | × | 9 100 |
- | 161879681 250 | = | - | 59380143 100 | + | x | − | ( | - | 58980143 100 | + | x | − | 4000 | ) | × | 9 100 |
方程右边 = | - | 59380143 100 | + | x | + | 58980143 100 | × | 9 100 | − | x | × | 9 100 | + | 4000 | × | 9 100 |
= | - | 59380143 100 | + | x | + | 530821287 10000 | − | x | × | 9 100 | + | 360 |