| ( | 3 | + | 2 | x | ) | ( | 31 5 | − | x | ) | × | 100 | = | 43627 200 | ( | 6 5 | − | 2 | x | ) | ( | 6 5 | − | 2 | x | ) | ( | 2 | − | x | ) | × | 4053 40 |
| 方程左边 = | 3 | ( | 31 5 | − | x | ) | × | 100 | + | 2 | x | ( | 31 5 | − | x | ) | × | 100 |
| = | 300 | ( | 31 5 | − | x | ) | + | 200 | x | ( | 31 5 | − | x | ) |
| = | 300 | × | 31 5 | − | 300 | x | + | 200 | x | ( | 31 5 | − | x | ) |
| = | 1860 | − | 300 | x | + | 200 | x | ( | 31 5 | − | x | ) |
| = | 1860 | − | 300 | x | + | 200 | x | × | 31 5 | − | 200 | x | x |
| = | 1860 | − | 300 | x | + | 1240 | x | − | 200 | x | x |
| = | 1860 | + | 940 | x | − | 200 | x | x |
| 1860 | + | 940 | x | − | 200 | x | x | = | 43627 200 | ( | 6 5 | − | 2 | x | ) | ( | 6 5 | − | 2 | x | ) | ( | 2 | − | x | ) | × | 4053 40 |
| 方程右边 = | 176820231 8000 | ( | 6 5 | − | 2 | x | ) | ( | 6 5 | − | 2 | x | ) | ( | 2 | − | x | ) |
| 1860 | + | 940 | x | − | 200 | x | x | = | 176820231 8000 | ( | 6 5 | − | 2 | x | ) | ( | 6 5 | − | 2 | x | ) | ( | 2 | − | x | ) |
| 方程右边 = | 176820231 8000 | × | 6 5 | ( | 6 5 | − | 2 | x | ) | ( | 2 | − | x | ) | − | 176820231 8000 | × | 2 | x | ( | 6 5 | − | 2 | x | ) | ( | 2 | − | x | ) |
| = | 530460693 20000 | ( | 6 5 | − | 2 | x | ) | ( | 2 | − | x | ) | − | 176820231 4000 | x | ( | 6 5 | − | 2 | x | ) | ( | 2 | − | x | ) |
| = | 530460693 20000 | × | 6 5 | ( | 2 | − | x | ) | − | 530460693 20000 | × | 2 | x | ( | 2 | − | x | ) | − | 176820231 4000 | x | ( | 6 5 | − | 2 | x | ) | ( | 2 | − | x | ) |
| = | 1591382079 50000 | ( | 2 | − | x | ) | − | 530460693 10000 | x | ( | 2 | − | x | ) | − | 176820231 4000 | x | ( | 6 5 | − | 2 | x | ) | ( | 2 | − | x | ) |
| = | 1591382079 50000 | × | 2 | − | 1591382079 50000 | x | − | 530460693 10000 | x | ( | 2 | − | x | ) | − | 176820231 4000 | x | ( | 6 5 | − | 2 | x | ) | ( | 2 | − | x | ) |
| = | 1591382079 25000 | − | 1591382079 50000 | x | − | 530460693 10000 | x | ( | 2 | − | x | ) | − | 176820231 4000 | x | ( | 6 5 | − | 2 | x | ) | ( | 2 | − | x | ) |
| = | 1591382079 25000 | − | 1591382079 50000 | x | − | 530460693 10000 | x | × | 2 | + | 530460693 10000 | x | x | − | 176820231 4000 | x | ( | 6 5 | − | 2 | x | ) |
| = | 1591382079 25000 | − | 1591382079 50000 | x | − | 530460693 5000 | x | + | 530460693 10000 | x | x | − | 176820231 4000 | x | ( | 6 5 | − | 2 | x | ) | ( | 2 | − | x | ) |