| ( | 797760 | + | X | ) | ÷ | 3 | ÷ | 13645004 25 | = | ( | 204521621 100 | + | 2678400 | − | X | ) | ÷ | 1517 100 | ÷ | 12381779 50 |
| 方程左边 = | ( | 797760 | + | X | ) | × | 25 40935012 |
| ( | 797760 | + | X | ) | × | 25 40935012 | = | ( | 204521621 100 | + | 2678400 | − | X | ) | ÷ | 1517 100 | ÷ | 12381779 50 |
| 方程左边 = | 797760 | × | 25 40935012 | + | X | × | 25 40935012 |
| = | 1662000 3411251 | + | X | × | 25 40935012 |
1662000 3411251 | + | 25 40935012 | X | = | ( | 204521621 100 | + | 2678400 | − | X | ) | ÷ | 1517 100 | ÷ | 12381779 50 |