| ( | 79919 | − | 3 2 | X | ) | × | 12 | ÷ | 22 | × | 9 10 | = | 18928 | + | 10 | X |
| 方程左边 = | ( | 79919 | − | 3 2 | X | ) | × | 27 55 |
| ( | 79919 | − | 3 2 | X | ) | × | 27 55 | = | 18928 | + | 10 | X |
| 方程左边 = | 79919 | × | 27 55 | − | 3 2 | X | × | 27 55 |
| = | 2157813 55 | − | 81 110 | X |
2157813 55 | − | 81 110 | X | = | 18928 | + | 10 | X |
| - | 81 110 | X | − | 10 | X | = | 18928 | − | 2157813 55 |
| - | 1181 110 | X | = | 18928 | − | 2157813 55 |
| - | 1181 110 | X | = | - | 1116773 55 |
1116773 55 | = | 1181 110 | X |
1181 110 | X | = | 1116773 55 |
| X | = | 1116773 55 | ÷ | 1181 110 |
| = | 1116773 55 | × | 110 1181 |
| = | 1116773 | × | 2 1181 |
| X | = | 2233546 1181 |
| X | = | 1891.232854 |