| ( | 25697 1000 | + | x | ) | × | 17 20 | = | 51393 1000 | + | 7189 100 | − | x |
| 方程左边 = | 25697 1000 | × | 17 20 | + | x | × | 17 20 |
| = | 436849 20000 | + | x | × | 17 20 |
436849 20000 | + | 17 20 | x | = | 51393 1000 | + | 7189 100 | − | x |
| 方程右边 = | 123283 1000 | − | x |
436849 20000 | + | 17 20 | x | = | 123283 1000 | − | x |
17 20 | x | + | x | = | 123283 1000 | − | 436849 20000 |
37 20 | x | = | 123283 1000 | − | 436849 20000 |
37 20 | x | = | 2028811 20000 |
| x | = | 2028811 20000 | ÷ | 37 20 |
| = | 2028811 20000 | × | 20 37 |
| = | 2028811 1000 | × | 1 37 |
| x | = | 2028811 37000 |
| x | = | 54.83273 |