| ( | 75505 | − | 5 2 | X | ) | × | 48 5 | ÷ | 103 5 | × | 9 10 | = | 19740 | + | 8 | X |
| 方程左边 = | ( | 75505 | − | 5 2 | X | ) | × | 216 515 |
| ( | 75505 | − | 5 2 | X | ) | × | 216 515 | = | 19740 | + | 8 | X |
| 方程左边 = | 75505 | × | 216 515 | − | 5 2 | X | × | 216 515 |
| = | 3261816 103 | − | 108 103 | X |
3261816 103 | − | 108 103 | X | = | 19740 | + | 8 | X |
| - | 108 103 | X | − | 8 | X | = | 19740 | − | 3261816 103 |
| - | 932 103 | X | = | 19740 | − | 3261816 103 |
| - | 932 103 | X | = | - | 1228596 103 |
1228596 103 | = | 932 103 | X |
932 103 | X | = | 1228596 103 |
| X | = | 1228596 103 | ÷ | 932 103 |
| = | 1228596 103 | × | 103 932 |
| = | 307149 103 | × | 103 233 |
| X | = | 31636347 23999 |
| X | = | 307149 233 |
| X | = | 1318.236052 |