| 1 | ÷ | 3 | × | ( | 170 | − | x | ) | − | 1 | ÷ | 4 | × | x | = | 10 |
| 方程左边 = | 1 3 | ( | 170 | − | x | ) | − | 1 4 | x |
1 3 | ( | 170 | − | x | ) | − | 1 4 | x | = | 10 |
| 方程左边 = | 1 3 | × | 170 | − | 1 3 | x | − | 1 4 | x |
| = | 170 3 | − | 1 3 | x | − | 1 4 | x |
| = | 170 3 | − | 7 12 | x |
170 3 | − | 7 12 | x | = | 10 |
| - | 7 12 | x | = | 10 | − | 170 3 |
| - | 7 12 | x | = | - | 140 3 |
140 3 | = | 7 12 | x |
7 12 | x | = | 140 3 |
| x | = | 140 3 | ÷ | 7 12 |
| = | 140 3 | × | 12 7 |
| = | 20 | × | 4 |
| x | = | 80 |