| ( | 26807 1000 | + | x | ) | × | 47 20 | = | 26807 500 | + | 72051 1000 | − | x |
| 方程左边 = | 26807 1000 | × | 47 20 | + | x | × | 47 20 |
| = | 1259929 20000 | + | x | × | 47 20 |
1259929 20000 | + | 47 20 | x | = | 26807 500 | + | 72051 1000 | − | x |
| 方程右边 = | 25133 200 | − | x |
1259929 20000 | + | 47 20 | x | = | 25133 200 | − | x |
47 20 | x | + | x | = | 25133 200 | − | 1259929 20000 |
67 20 | x | = | 25133 200 | − | 1259929 20000 |
67 20 | x | = | 1253371 20000 |
| x | = | 1253371 20000 | ÷ | 67 20 |
| = | 1253371 20000 | × | 20 67 |
| = | 1253371 1000 | × | 1 67 |
| x | = | 1253371 67000 |
| x | = | 18.70703 |