| x | − | 62181 100 | − | ( | x | − | 621811 1000 | ) | × | 3 100 | = | 8000 |
| 方程左边 = | x | − | 62181 100 | − | x | × | 3 100 | + | 621811 1000 | × | 3 100 |
| = | x | − | 62181 100 | − | x | × | 3 100 | + | 1865433 100000 |
| = | 97 100 | x | − | 60315567 100000 |
97 100 | x | − | 60315567 100000 | = | 8000 |
97 100 | x | = | 8000 | + | 60315567 100000 |
97 100 | x | = | 860315567 100000 |
| x | = | 860315567 100000 | ÷ | 97 100 |
| = | 860315567 100000 | × | 100 97 |
| = | 860315567 1000 | × | 1 97 |
| x | = | 860315567 97000 |
| x | = | 8869.232649 |