| x | ÷ | 109 100 | × | 9 100 | = | x | ÷ | 103 100 | × | 3 100 | + | 129239497 100 | + | x | ÷ | 109 100 | × | 3 100 |
| 方程左边 = | x | × | 9 109 |
9 109 | x | = | x | ÷ | 103 100 | × | 3 100 | + | 129239497 100 | + | x | ÷ | 109 100 | × | 3 100 |
| 方程右边 = | x | × | 3 103 | + | 129239497 100 | + | x | × | 3 109 |
| = | 636 11227 | x | + | 129239497 100 |
9 109 | x | = | 636 11227 | x | + | 129239497 100 |
9 109 | x | − | 636 11227 | x | = | 129239497 100 |
291 11227 | x | = | 129239497 100 |
| x | = | 129239497 100 | ÷ | 291 11227 |
| = | 129239497 100 | × | 11227 291 |
| x | = | 1450971832819 29100 |