| x | + | 1 10 | x | + | ( | ( | x | + | 1 1000 | ) | × | 1 20 | ) | = | 2287 10 |
| 方程左边 = | 11 10 | x | + | ( | ( | x | + | 1 1000 | ) | × | 1 20 | ) |
11 10 | x | + | ( | ( | x | + | 1 1000 | ) | × | 1 20 | ) | = | 2287 10 |
| 方程左边 = | 11 10 | x | + | ( | x | + | 1 1000 | ) | × | 1 20 |
| = | 11 10 | x | + | x | × | 1 20 | + | 1 1000 | × | 1 20 |
| = | 11 10 | x | + | x | × | 1 20 | + | 1 20000 |
| = | 23 20 | x | + | 1 20000 |
23 20 | x | + | 1 20000 | = | 2287 10 |
23 20 | x | = | 2287 10 | − | 1 20000 |
23 20 | x | = | 4573999 20000 |
| x | = | 4573999 20000 | ÷ | 23 20 |
| = | 4573999 20000 | × | 20 23 |
| = | 4573999 1000 | × | 1 23 |
| x | = | 4573999 23000 |
| x | = | 198.869522 |