| ( | x | − | x | ÷ | 109 100 | × | 3 100 | ) | ÷ | 109 100 | × | 3 100 | = | 6173 50 |
| 方程左边 = | ( | x | − | x | ÷ | 109 100 | × | 3 100 | ) | × | 3 109 |
| ( | x | − | x | ÷ | 109 100 | × | 3 100 | ) | × | 3 109 | = | 6173 50 |
| 方程左边 = | x | × | 3 109 | − | x | ÷ | 109 100 | × | 3 100 | × | 3 109 |
| = | x | × | 3 109 | − | x | × | 9 11881 |
| = | 318 11881 | x |
318 11881 | x | = | 6173 50 |
| x | = | 6173 50 | ÷ | 318 11881 |
| = | 6173 50 | × | 11881 318 |
| x | = | 73341413 15900 |
| x | = | 4612.667484 |