| ( | 69593 | − | 5 2 | X | ) | × | 54 5 | ÷ | 109 5 | × | 9 10 | = | 17500 | + | 9 | X |
| 方程左边 = | ( | 69593 | − | 5 2 | X | ) | × | 243 545 |
| ( | 69593 | − | 5 2 | X | ) | × | 243 545 | = | 17500 | + | 9 | X |
| 方程左边 = | 69593 | × | 243 545 | − | 5 2 | X | × | 243 545 |
| = | 16911099 545 | − | 243 218 | X |
16911099 545 | − | 243 218 | X | = | 17500 | + | 9 | X |
| - | 243 218 | X | − | 9 | X | = | 17500 | − | 16911099 545 |
| - | 2205 218 | X | = | 17500 | − | 16911099 545 |
| - | 2205 218 | X | = | - | 7373599 545 |
7373599 545 | = | 2205 218 | X |
2205 218 | X | = | 7373599 545 |
| X | = | 7373599 545 | ÷ | 2205 218 |
| = | 7373599 545 | × | 218 2205 |
| X | = | 1607444582 1201725 |
| X | = | 14747198 11025 |
| X | = | 1337.614331 |