| ( | 26127 1000 | + | x | ) | × | 43 20 | = | 26127 500 | + | 69681 1000 | − | x |
| 方程左边 = | 26127 1000 | × | 43 20 | + | x | × | 43 20 |
| = | 1123461 20000 | + | x | × | 43 20 |
1123461 20000 | + | 43 20 | x | = | 26127 500 | + | 69681 1000 | − | x |
| 方程右边 = | 24387 200 | − | x |
1123461 20000 | + | 43 20 | x | = | 24387 200 | − | x |
43 20 | x | + | x | = | 24387 200 | − | 1123461 20000 |
63 20 | x | = | 24387 200 | − | 1123461 20000 |
63 20 | x | = | 1315239 20000 |
| x | = | 1315239 20000 | ÷ | 63 20 |
| = | 1315239 20000 | × | 20 63 |
| = | 438413 1000 | × | 1 21 |
| x | = | 438413 21000 |
| x | = | 20.87681 |