| ( | 12748 25 | + | X | ) | ÷ | ( | 12812 | − | X | ) | = | 10 100 |
| 方程两边同时乘以: | ( | 12812 | − | X | ) |
| ( | 12748 25 | + | X | ) | = | 10 100 | ( | 12812 | − | X | ) |
12748 25 | + | X | = | 10 100 | ( | 12812 | − | X | ) |
12748 25 | + | X | = | 10 100 | × | 12812 | − | 10 100 | X |
12748 25 | + | X | = | 6406 5 | − | 10 100 | X |
| X | + | 10 100 | X | = | 6406 5 | − | 12748 25 |
11 10 | X | = | 6406 5 | − | 12748 25 |
11 10 | X | = | 19282 25 |
| X | = | 19282 25 | ÷ | 11 10 |
| = | 19282 25 | × | 10 11 |
| = | 19282 5 | × | 2 11 |
| X | = | 38564 55 |
| X | = | 701.163636 |