| ( | - | 51 | ÷ | 18 | − | x | ) | ÷ | ( | 0 | − | x | ) | = | 73 | ÷ | 17 |
| 方程两边同时乘以: | ( | 0 | − | x | ) |
| ( | - | 51 | ÷ | 18 | − | x | ) | = | 73 | ÷ | 17 | × | ( | 0 | − | x | ) |
| - | 51 | ÷ | 18 | − | x | = | 73 | ÷ | 17 | × | ( | 0 | − | x | ) |
| - | 51 | ÷ | 18 | − | x | = | 73 | ÷ | 17 | × | 0 | − | 73 | ÷ | 17 | × | x |
| - | 17 6 | − | x | = | 0 | − | 73 17 | x |
| - | x | + | 73 17 | x | = | 17 6 |
56 17 | x | = | 17 6 |
| x | = | 17 6 | ÷ | 56 17 |
| = | 17 6 | × | 17 56 |
| x | = | 289 336 |
| x | = | 0.860119 |