| ( | 4966490 | − | 88111 | − | x | ) | × | 5 100 | = | x |
| 方程左边 = | 4966490 | × | 5 100 | − | 88111 | × | 5 100 | − | x | × | 5 100 |
| = | 496649 2 | − | 88111 20 | − | x | × | 5 100 |
| = | 4878379 20 | − | 5 100 | x |
4878379 20 | − | 5 100 | x | = | x |
| - | 5 100 | x | − | x | = | - | 4878379 20 |
| - | 21 20 | x | = | - | 4878379 20 |
4878379 20 | = | 21 20 | x |
21 20 | x | = | 4878379 20 |
| x | = | 4878379 20 | ÷ | 21 20 |
| = | 4878379 20 | × | 20 21 |
| = | 4878379 | × | 1 21 |
| x | = | 4878379 21 |
| x | = | 232303.761905 |