| x | − | ( | 1 20 | x | − | 1001 1000 | ) | = | 1999 25 |
| 方程左边 = | x | − | 1 20 | x | + | 1001 1000 |
| = | 19 20 | x | + | 1001 1000 |
19 20 | x | + | 1001 1000 | = | 1999 25 |
19 20 | x | = | 1999 25 | − | 1001 1000 |
19 20 | x | = | 78959 1000 |
| x | = | 78959 1000 | ÷ | 19 20 |
| = | 78959 1000 | × | 20 19 |
| = | 78959 50 | × | 1 19 |
| x | = | 78959 950 |
| x | = | 83.114737 |