| ( | 252 | ( | 1 | + | 20 100 | ) | ) | + | ( | 5 100 | x | ) | = | x |
| 方程左边 = | 252 | ( | 1 | + | 20 100 | ) | + | ( | 5 100 | x | ) |
| = | 252 | × | 1 | + | 252 | × | 20 100 | + | ( | 5 100 | x | ) |
| = | 252 | + | 252 5 | + | ( | 5 100 | x | ) |
| = | 1512 5 | + | ( | 5 100 | x | ) |
| = | 1512 5 | + | 5 100 | x |
1512 5 | + | 5 100 | x | = | x |
5 100 | x | − | x | = | - | 1512 5 |
| - | 19 20 | x | = | - | 1512 5 |
1512 5 | = | 19 20 | x |
19 20 | x | = | 1512 5 |
| x | = | 1512 5 | ÷ | 19 20 |
| = | 1512 5 | × | 20 19 |
| = | 1512 | × | 4 19 |
| x | = | 6048 19 |
| x | = | 318.315789 |