| ( | 25851 1000 | + | x | ) | × | 39 20 | = | 25851 500 | + | 70353 1000 | − | x |
| 方程左边 = | 25851 1000 | × | 39 20 | + | x | × | 39 20 |
| = | 1008189 20000 | + | x | × | 39 20 |
1008189 20000 | + | 39 20 | x | = | 25851 500 | + | 70353 1000 | − | x |
| 方程右边 = | 24411 200 | − | x |
1008189 20000 | + | 39 20 | x | = | 24411 200 | − | x |
39 20 | x | + | x | = | 24411 200 | − | 1008189 20000 |
59 20 | x | = | 24411 200 | − | 1008189 20000 |
59 20 | x | = | 1432911 20000 |
| x | = | 1432911 20000 | ÷ | 59 20 |
| = | 1432911 20000 | × | 20 59 |
| = | 1432911 1000 | × | 1 59 |
| x | = | 1432911 59000 |
| x | = | 24.286627 |