| - | 10 | + | 5 | ( | 4 | − | 92 | ÷ | ( | 5 | x | + | 7 | ) | ) | = | 5 |
| - | 10 | + | 5 | × | 4 | − | 5 | × | 92 | ÷ | ( | 5 | x | + | 7 | ) | = | 5 |
| - | 10 | + | 20 | − | 460 | ÷ | ( | 5 | x | + | 7 | ) | = | 5 |
| 10 | − | 460 | ÷ | ( | 5 | x | + | 7 | ) | = | 5 |
| 方程两边同时乘以: | ( | 5 | x | + | 7 | ) |
| 10 | ( | 5 | x | + | 7 | ) | − | 460 | = | 5 | ( | 5 | x | + | 7 | ) |
| 10 | × | 5 | x | + | 10 | × | 7 | − | 460 | = | 5 | ( | 5 | x | + | 7 | ) |
| 10 | × | 5 | x | + | 10 | × | 7 | − | 460 | = | 5 | × | 5 | x | + | 5 | × | 7 |
| 50 | x | + | 70 | − | 460 | = | 25 | x | + | 35 |
| 50 | x | − | 390 | = | 25 | x | + | 35 |
| 50 | x | − | 25 | x | = | 35 | + | 390 |
| 25 | x | = | 35 | + | 390 |
| 25 | x | = | 425 |
| x | = | 425 | ÷ | 25 |
| = | 425 | × | 1 25 |
| = | 17 | × | 1 |
| x | = | 17 |