| ( | 77270 | − | 5 2 | ) | × | 54 5 | ÷ | 114 5 | × | 9 10 | = | 19737 | + | 9 | X |
| 方程左边 = | ( | 77270 | − | 5 2 | ) | × | 81 190 |
| ( | 77270 | − | 5 2 | ) | × | 81 190 | = | 19737 | + | 9 | X |
| 方程左边 = | 77270 | × | 81 190 | − | 5 2 | × | 81 190 |
| = | 625887 19 | − | 81 76 |
| = | 2503467 76 |
2503467 76 | = | 19737 | + | 9 | X |
| - | 9 | X | = | 19737 | − | 2503467 76 |
| - | 9 | X | = | - | 1003455 76 |
1003455 76 | = | 9 | X |
| 9 | X | = | 1003455 76 |
| X | = | 1003455 76 | ÷ | 9 |
| = | 1003455 76 | × | 1 9 |
| = | 111495 76 | × | 1 |
| X | = | 111495 76 |
| X | = | 1467.039474 |