| ( | 41789 1000 | + | x | ) | × | 39 20 | = | 35189 500 | + | 41789 1000 | − | x |
| 方程左边 = | 41789 1000 | × | 39 20 | + | x | × | 39 20 |
| = | 1629771 20000 | + | x | × | 39 20 |
1629771 20000 | + | 39 20 | x | = | 35189 500 | + | 41789 1000 | − | x |
| 方程右边 = | 112167 1000 | − | x |
1629771 20000 | + | 39 20 | x | = | 112167 1000 | − | x |
39 20 | x | + | x | = | 112167 1000 | − | 1629771 20000 |
59 20 | x | = | 112167 1000 | − | 1629771 20000 |
59 20 | x | = | 613569 20000 |
| x | = | 613569 20000 | ÷ | 59 20 |
| = | 613569 20000 | × | 20 59 |
| = | 613569 1000 | × | 1 59 |
| x | = | 613569 59000 |
| x | = | 10.399475 |