| x | − | x | × | 13 200 | − | ( | x | + | 818000 | ) | × | 3 10000 | = | 818000 |
| 方程左边 = | 187 200 | x | − | ( | x | + | 818000 | ) | × | 3 10000 |
187 200 | x | − | ( | x | + | 818000 | ) | × | 3 10000 | = | 818000 |
| 方程左边 = | 187 200 | x | − | x | × | 3 10000 | − | 818000 | × | 3 10000 |
| = | 187 200 | x | − | x | × | 3 10000 | − | 1227 5 |
| = | 9347 10000 | x | − | 1227 5 |
9347 10000 | x | − | 1227 5 | = | 818000 |
9347 10000 | x | = | 818000 | + | 1227 5 |
9347 10000 | x | = | 4091227 5 |
| x | = | 4091227 5 | ÷ | 9347 10000 |
| = | 4091227 5 | × | 10000 9347 |
| = | 4091227 | × | 2000 9347 |
| x | = | 8182454000 9347 |
| x | = | 875409.650155 |