| x | − | ( | x | ÷ | 109 100 | × | 9 100 | ) | − | ( | x | × | 1 40 | ) | = | 83134352 5 |
| 方程左边 = | x | − | x | ÷ | 109 100 | × | 9 100 | − | ( | x | × | 1 40 | ) |
| = | x | − | x | × | 9 109 | − | ( | x | × | 1 40 | ) |
| = | 100 109 | x | − | ( | x | × | 1 40 | ) |
| = | 100 109 | x | − | x | × | 1 40 |
| = | 3891 4360 | x |
3891 4360 | x | = | 83134352 5 |
| x | = | 83134352 5 | ÷ | 3891 4360 |
| = | 83134352 5 | × | 4360 3891 |
| = | 83134352 | × | 872 3891 |
| x | = | 72493154944 3891 |