| ( | 26807 1000 | + | x | ) | × | 39 20 | = | 26807 500 | + | 71721 1000 | − | x |
| 方程左边 = | 26807 1000 | × | 39 20 | + | x | × | 39 20 |
| = | 1045473 20000 | + | x | × | 39 20 |
1045473 20000 | + | 39 20 | x | = | 26807 500 | + | 71721 1000 | − | x |
| 方程右边 = | 25067 200 | − | x |
1045473 20000 | + | 39 20 | x | = | 25067 200 | − | x |
39 20 | x | + | x | = | 25067 200 | − | 1045473 20000 |
59 20 | x | = | 25067 200 | − | 1045473 20000 |
59 20 | x | = | 1461227 20000 |
| x | = | 1461227 20000 | ÷ | 59 20 |
| = | 1461227 20000 | × | 20 59 |
| = | 1461227 1000 | × | 1 59 |
| x | = | 1461227 59000 |
| x | = | 24.766559 |