| 25 | + | 432 5 | + | ( | 25 | − | x | ) | × | 43 10 | = | ( | 50 | + | 13 2 | x | ) | ÷ | 3 2 |
| 方程左边 = | 557 5 | + | ( | 25 | − | x | ) | × | 43 10 |
557 5 | + | ( | 25 | − | x | ) | × | 43 10 | = | ( | 50 | + | 13 2 | x | ) | ÷ | 3 2 |
| 方程左边 = | 557 5 | + | 25 | × | 43 10 | − | x | × | 43 10 |
| = | 557 5 | + | 215 2 | − | x | × | 43 10 |
| = | 2189 10 | − | 43 10 | x |
2189 10 | − | 43 10 | x | = | ( | 50 | + | 13 2 | x | ) | ÷ | 3 2 |
| 方程右边 = | 50 | × | 2 3 | + | 13 2 | x | × | 2 3 |
| = | 100 3 | + | 13 3 | x |
2189 10 | − | 43 10 | x | = | 100 3 | + | 13 3 | x |
| - | 43 10 | x | − | 13 3 | x | = | 100 3 | − | 2189 10 |
| - | 259 30 | x | = | 100 3 | − | 2189 10 |
| - | 259 30 | x | = | - | 5567 30 |
5567 30 | = | 259 30 | x |
259 30 | x | = | 5567 30 |
| x | = | 5567 30 | ÷ | 259 30 |
| = | 5567 30 | × | 30 259 |
| = | 5567 | × | 1 259 |
| x | = | 5567 259 |
| x | = | 21.494208 |