| 10 | ÷ | 102 | + | X | ÷ | 200 | + | ( | 404 5 | − | X | ) | ÷ | 255 2 | = | 59 100 |
| 方程左边 = | 5 51 | + | X | × | 1 200 | + | ( | 404 5 | − | X | ) | × | 2 255 |
5 51 | + | 1 200 | X | + | ( | 404 5 | − | X | ) | × | 2 255 | = | 59 100 |
| 方程左边 = | 5 51 | + | 1 200 | X | + | 404 5 | × | 2 255 | − | X | × | 2 255 |
| = | 5 51 | + | 1 200 | X | + | 808 1275 | − | X | × | 2 255 |
| = | 311 425 | − | 29 10200 | X |
311 425 | − | 29 10200 | X | = | 59 100 |
| - | 29 10200 | X | = | 59 100 | − | 311 425 |
| - | 29 10200 | X | = | - | 241 1700 |
241 1700 | = | 29 10200 | X |
29 10200 | X | = | 241 1700 |
| X | = | 241 1700 | ÷ | 29 10200 |
| = | 241 1700 | × | 10200 29 |
| = | 241 | × | 6 29 |
| X | = | 1446 29 |
| X | = | 49.862069 |