| ( | x | − | 242109 625000 | ) | ( | 3868576347 1000000000 | − | x | ) | = | 1651008551 5000000000 |
| 方程左边 = | x | ( | 3868576347 1000000000 | − | x | ) | − | 242109 625000 | ( | 3868576347 1000000000 | − | x | ) |
| = | x | × | 3868576347 1000000000 | − | x | x | − | 242109 625000 | ( | 3868576347 1000000000 | − | x | ) |
| = | 3868576347 1000000000 | x | − | x | x | − | 242109 625000 | × | 3868576347 1000000000 | + | 242109 625000 | x |