| ( | 25697 1000 | + | x | ) | × | 7 4 | = | 51393 1000 | + | 6989 100 | − | x |
| 方程左边 = | 25697 1000 | × | 7 4 | + | x | × | 7 4 |
| = | 179879 4000 | + | x | × | 7 4 |
179879 4000 | + | 7 4 | x | = | 51393 1000 | + | 6989 100 | − | x |
| 方程右边 = | 121283 1000 | − | x |
179879 4000 | + | 7 4 | x | = | 121283 1000 | − | x |
7 4 | x | + | x | = | 121283 1000 | − | 179879 4000 |
11 4 | x | = | 121283 1000 | − | 179879 4000 |
11 4 | x | = | 305253 4000 |
| x | = | 305253 4000 | ÷ | 11 4 |
| = | 305253 4000 | × | 4 11 |
| = | 305253 1000 | × | 1 11 |
| x | = | 305253 11000 |
| x | = | 27.750273 |