| ( | 75660 | − | 5 2 | X | ) | × | 48 5 | ÷ | 103 5 | × | 9 10 | = | 21159 | + | 8 | X |
| 方程左边 = | ( | 75660 | − | 5 2 | X | ) | × | 216 515 |
| ( | 75660 | − | 5 2 | X | ) | × | 216 515 | = | 21159 | + | 8 | X |
| 方程左边 = | 75660 | × | 216 515 | − | 5 2 | X | × | 216 515 |
| = | 3268512 103 | − | 108 103 | X |
3268512 103 | − | 108 103 | X | = | 21159 | + | 8 | X |
| - | 108 103 | X | − | 8 | X | = | 21159 | − | 3268512 103 |
| - | 932 103 | X | = | 21159 | − | 3268512 103 |
| - | 932 103 | X | = | - | 1089135 103 |
1089135 103 | = | 932 103 | X |
932 103 | X | = | 1089135 103 |
| X | = | 1089135 103 | ÷ | 932 103 |
| = | 1089135 103 | × | 103 932 |
| X | = | 112180905 95996 |
| X | = | 1089135 932 |
| X | = | 1168.599785 |