| X | − | 1 100 | X | − | X | ÷ | 103 100 | × | 3 100 | × | 11 10 | − | 3 10000 | X | = | 900000 |
| 方程左边 = | X | − | 1 100 | X | − | X | × | 33 1030 | − | 3 10000 | X |
| = | 986391 1030000 | X |
986391 1030000 | X | = | 900000 |
| X | = | 900000 | ÷ | 986391 1030000 |
| = | 900000 | × | 1030000 986391 |
| = | 100000 | × | 1030000 109599 |
| X | = | 103000000000 109599 |