| 100000 | x | − | ( | ( | x | + | 560 | + | 12 | ) | × | 100000 | + | 12000000 | ) | = | 0 |
| 方程左边 = | 100000 | x | − | ( | x | + | 560 | + | 12 | ) | × | 100000 | − | 12000000 |
| = | 100000 | x | − | x | × | 100000 | − | 560 | × | 100000 | − | 12 | × | 100000 | − | 12000000 |
| = | 100000 | x | − | x | × | 100000 | − | 56000000 | − | 1200000 | − | 12000000 |
| = | 0 | x | − | 69200000 |
| - | 69200000 | = | 0 |
| = | 0 | + | 69200000 |