| 2 | X | ÷ | ( | 2 | X | + | 150707 25 | ) | = | 20 100 |
| 方程两边同时乘以: | ( | 2 | X | + | 150707 25 | ) |
| 2 | X | = | 20 100 | ( | 2 | X | + | 150707 25 | ) |
| 2 | X | = | 20 100 | × | 2 | X | + | 20 100 | × | 150707 25 |
| 2 | X | = | 2 5 | X | + | 150707 125 |
| 2 | X | − | 2 5 | X | = | 150707 125 |
8 5 | X | = | 150707 125 |
| X | = | 150707 125 | ÷ | 8 5 |
| = | 150707 125 | × | 5 8 |
| = | 150707 25 | × | 1 8 |
| X | = | 150707 200 |
| X | = | 753.535 |