| 24 | × | 787 1000 | + | 25 | ( | 213 1000 | − | x | ) | + | 26 | x | = | 4861 200 |
| 方程左边 = | 2361 125 | + | 25 | ( | 213 1000 | − | x | ) | + | 26 | x |
2361 125 | + | 25 | ( | 213 1000 | − | x | ) | + | 26 | x | = | 4861 200 |
| 方程左边 = | 2361 125 | + | 25 | × | 213 1000 | − | 25 | x | + | 26 | x |
| = | 2361 125 | + | 213 40 | − | 25 | x | + | 26 | x |
| = | 24213 1000 | + | 1 | x |
24213 1000 | + | 1 | x | = | 4861 200 |
| 1 | x | = | 4861 200 | − | 24213 1000 |
| x | = | 4861 200 | − | 24213 1000 |
| x | = | 23 250 |