| ( | 26127 1000 | + | x | ) | × | 51 20 | = | 26127 500 | + | 69681 1000 | − | x |
| 方程左边 = | 26127 1000 | × | 51 20 | + | x | × | 51 20 |
| = | 1332477 20000 | + | x | × | 51 20 |
1332477 20000 | + | 51 20 | x | = | 26127 500 | + | 69681 1000 | − | x |
| 方程右边 = | 24387 200 | − | x |
1332477 20000 | + | 51 20 | x | = | 24387 200 | − | x |
51 20 | x | + | x | = | 24387 200 | − | 1332477 20000 |
71 20 | x | = | 24387 200 | − | 1332477 20000 |
71 20 | x | = | 1106223 20000 |
| x | = | 1106223 20000 | ÷ | 71 20 |
| = | 1106223 20000 | × | 20 71 |
| = | 1106223 1000 | × | 1 71 |
| x | = | 1106223 71000 |
| x | = | 15.580606 |