| ( | X | × | 3 200 | ) | + | ( | 24784177 100 | − | X | ) | = | 24784177 100 |
| 方程左边 = | X | × | 3 200 | + | ( | 24784177 100 | − | X | ) |
| = | 3 200 | X | + | 24784177 100 | − | X |
| = | - | 197 200 | X | + | 24784177 100 |
| - | 197 200 | X | + | 24784177 100 | = | 24784177 100 |
| - | 197 200 | X | = | 24784177 100 | − | 24784177 100 |
| - | 197 200 | X | = | 0 |
| - | 0 | = | 197 200 | X |
197 200 | X | = | - | 0 |
| X | = | - | 0 | ÷ | 197 200 |
| = | - | 0 | × | 200 197 |
| = | - | 0 | × | 2 197 |
| X | = | 0 |