| ( | 68633 200000 | − | 333 100000 | x | ) | ( | x | − | 5 | ) | = | ( | 19 2 | − | x | ) | ( | 97 2500 | + | 163 5000 | x | ) |
| 方程左边 = | 68633 200000 | ( | x | − | 5 | ) | − | 333 100000 | x | ( | x | − | 5 | ) |
| = | 68633 200000 | x | − | 68633 200000 | × | 5 | − | 333 100000 | x | ( | x | − | 5 | ) |
| = | 68633 200000 | x | − | 68633 40000 | − | 333 100000 | x | ( | x | − | 5 | ) |
| = | 68633 200000 | x | − | 68633 40000 | − | 333 100000 | x | x | + | 333 100000 | x | × | 5 |
| = | 68633 200000 | x | − | 68633 40000 | − | 333 100000 | x | x | + | 333 20000 | x |
| = | 71963 200000 | x | − | 68633 40000 | − | 333 100000 | x | x |
71963 200000 | x | − | 68633 40000 | − | 333 100000 | x | x | = | ( | 19 2 | − | x | ) | ( | 97 2500 | + | 163 5000 | x | ) |
| 方程右边 = | 19 2 | ( | 97 2500 | + | 163 5000 | x | ) | − | x | ( | 97 2500 | + | 163 5000 | x | ) |
| = | 19 2 | × | 97 2500 | + | 19 2 | × | 163 5000 | x | − | x | ( | 97 2500 | + | 163 5000 | x | ) |
| = | 1843 5000 | + | 3097 10000 | x | − | x | ( | 97 2500 | + | 163 5000 | x | ) |
| = | 1843 5000 | + | 3097 10000 | x | − | x | × | 97 2500 | − | x | × | 163 5000 | x |
| = | 1843 5000 | + | 2709 10000 | x | − | x | × | 163 5000 | x |
71963 200000 | x | − | 68633 40000 | − | 333 100000 | x | x | = | 1843 5000 | + | 2709 10000 | x | − | x | × | 163 5000 | x |