| ( | 25851 1000 | + | x | ) | × | 41 20 | = | 25851 500 | + | 70453 1000 | − | x |
| 方程左边 = | 25851 1000 | × | 41 20 | + | x | × | 41 20 |
| = | 1059891 20000 | + | x | × | 41 20 |
1059891 20000 | + | 41 20 | x | = | 25851 500 | + | 70453 1000 | − | x |
| 方程右边 = | 24431 200 | − | x |
1059891 20000 | + | 41 20 | x | = | 24431 200 | − | x |
41 20 | x | + | x | = | 24431 200 | − | 1059891 20000 |
61 20 | x | = | 24431 200 | − | 1059891 20000 |
61 20 | x | = | 1383209 20000 |
| x | = | 1383209 20000 | ÷ | 61 20 |
| = | 1383209 20000 | × | 20 61 |
| = | 1383209 1000 | × | 1 61 |
| x | = | 1383209 61000 |
| x | = | 22.675557 |