| ( | X | × | 77 10000 | ) | + | ( | X | ÷ | 637 5 | × | 1051 25 | ) | = | 1700000 |
| 方程左边 = | X | × | 77 10000 | + | ( | X | ÷ | 637 5 | × | 1051 25 | ) |
| = | 77 10000 | X | + | X | ÷ | 637 5 | × | 1051 25 |
| = | 77 10000 | X | + | X | × | 1051 3185 |
| = | 2151049 6370000 | X |
2151049 6370000 | X | = | 1700000 |
| X | = | 1700000 | ÷ | 2151049 6370000 |
| = | 1700000 | × | 6370000 2151049 |
| X | = | 10829000000000 2151049 |