| ( | 26253 1000 | + | x | ) | × | 51 20 | = | 26153 500 | + | 69859 1000 | − | x |
| 方程左边 = | 26253 1000 | × | 51 20 | + | x | × | 51 20 |
| = | 1338903 20000 | + | x | × | 51 20 |
1338903 20000 | + | 51 20 | x | = | 26153 500 | + | 69859 1000 | − | x |
| 方程右边 = | 24433 200 | − | x |
1338903 20000 | + | 51 20 | x | = | 24433 200 | − | x |
51 20 | x | + | x | = | 24433 200 | − | 1338903 20000 |
71 20 | x | = | 24433 200 | − | 1338903 20000 |
71 20 | x | = | 1104397 20000 |
| x | = | 1104397 20000 | ÷ | 71 20 |
| = | 1104397 20000 | × | 20 71 |
| = | 1104397 1000 | × | 1 71 |
| x | = | 1104397 71000 |
| x | = | 15.554887 |