| ( | ( | 50 | − | 17 10 | x | ) | ) | ÷ | 14 5 | + | 17 10 | x | = | 50 |
| 方程左边 = | ( | 50 | − | 17 10 | x | ) | × | 5 14 | + | 17 10 | x |
| = | 50 | × | 5 14 | − | 17 10 | x | × | 5 14 | + | 17 10 | x |
| = | 125 7 | − | 17 28 | x | + | 17 10 | x |
| = | 125 7 | + | 153 140 | x |
125 7 | + | 153 140 | x | = | 50 |
153 140 | x | = | 50 | − | 125 7 |
153 140 | x | = | 225 7 |
| x | = | 225 7 | ÷ | 153 140 |
| = | 225 7 | × | 140 153 |
| = | 25 | × | 20 17 |
| x | = | 500 17 |
| x | = | 29.411765 |